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Advances in microbiology of the sea. 001. Vol. 1
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Year: 1968 Publisher: London : Academic Press,

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Root diseases and soil-borne pathogens. Second international symposium on factors determining the behavior of plant pathogens in soil held at Imperial College, London, July 14-28, 1968 in conjunction with the first international Congress of plant pathology
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Year: 1970 Publisher: Berkeley, CA ; Los Angeles, CA ; London : University of California Press,

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Lichenology : progress and problems : proceedings of an international symposium held at the University of Bristol
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ISBN: 0121367509 Year: 1976 Publisher: London Academic press

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Physiological bases of phytoplankton ecology
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ISBN: 066011089X Year: 1981 Publisher: Ottawa : Department of fisheries and oceans,

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The physiology of growth. 004
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Year: 1962 Publisher: New York, NY : Academic Press,

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Methods for studying soil microflora-plant, disease relationships
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Year: 1960 Publisher: Minneapolis : Burgess,

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Saving and growth in Egypt
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Year: 2011 Publisher: Washington, D.C., The World Bank,

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This study illustrates the mechanisms linking national saving and economic growth, with the purpose of understanding the possibilities and limits of a saving-based growth agenda in the context of the Egyptian economy. This is done through a simple theoretical model, calibrated to fit the Egyptian economy, and simulated to explore different potential scenarios. The main conclusion is that if the Egyptian economy does not experience progress in productivity-stemming from technological innovation, improved public management, and private-sector reforms-then a high rate of economic growth is not feasible at current rates of national saving and would require a saving effort that is highly unrealistic. For instance, financing a constant 4 percent growth rate of gross domestic product per capita with no improvement in total factor productivity would require a national saving rate of around 50 percent in the first decade and 80 percent in 25 years. However, if productivity rises, sustaining and improving high rates of economic growth becomes viable. Following the previous example, a 2 percent growth rate of total factor productivity would allow a 4 percent growth rate of gross domestic product per capita with national saving rate in the realistic range of 20-25 percent of gross domestic product.


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Forecasting migrant remittances during the global financial crisis
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Year: 2010 Publisher: Washington, D.C., The World Bank,

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The financial crisis has highlighted the need for forecasts of remittance flows in many developing countries where these flows have proved to be a lifeline to the poor people and the economy. This note describes a simple methodology for forecasting country-level remittance flows in a manner consistent with the medium-term outlook for the global economy. Remittances are assumed to depend on bilateral migration stocks and income levels in the host country and the origin country. Changes in remittance costs, shifts in remittance channels, global exchange rate movements, and unpredictable immigration controls in the migrant-destination countries pose risks to the forecasts. Much remains to be done to improve the forecast methodology, data on bilateral flows, and high-frequency monitoring of migration and remittance flows.


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Is there a metropolitan bias? : the inverse relationship between poverty and city size in selected developing countries
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Year: 2010 Publisher: Washington, D.C., The World Bank,

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This paper provides evidence from eight developing countries of an inverse relationship between poverty and city size. Poverty is both more widespread and deeper in very small and small towns than in large or very large cities. This basic pattern is generally robust to choice of poverty line. The paper shows, further, that for all eight countries, a majority of the urban poor live in medium, small, or very small towns. Moreover, it is shown that the greater incidence and severity of consumption poverty in smaller towns is generally compounded by similarly greater deprivation in terms of access to basic infrastructure services, such as electricity, heating gas, sewerage, and solid waste disposal. The authors illustrate for one country-Morocco-that inequality within large cities is not driven by a severe dichotomy between slum dwellers and others. The notion of a single cleavage between slum residents and well-to-do burghers as the driver of urban inequality in the developing world thus appears to be unsubstantiated-at least in this case. Robustness checks are performed to assess whether the findings in the paper are driven by price variation across city-size categories, by the reliance on an income-based concept of well-being, and by the application of small-area estimation techniques for estimating poverty rates at the town and city level.


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A practical comparison of the bivariate probit and linear IV estimators
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Year: 2011 Publisher: Washington, D.C., The World Bank,

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This paper presents asymptotic theory and Monte-Carlo simulations comparing maximum-likelihood bivariate probit and linear instrumental variables estimators of treatment effects in models with a binary endogenous treatment and binary outcome. The three main contributions of the paper are (a) clarifying the relationship between the Average Treatment Effect obtained in the bivariate probit model and the Local Average Treatment Effect estimated through linear IV; (b) comparing the mean-square error and the actual size and power of tests based on these estimators across a wide range of parameter values relative to the existing literature; and (c) assessing the performance of misspecification tests for bivariate probit models. The authors recommend two changes to common practices: bootstrapped confidence intervals for both estimators, and a score test to check goodness of fit for the bivariate probit model.

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