TY - BOOK ID - 2121946 TI - Programmes for pocket calculators HP-67 and HP-97 in the field of theoretical and observational astronomy AU - Bertian, Florent C. AU - Presses universitaires de Louvain PY - 1977 SN - 9061860652 9789061860655 PB - Leuven Universitaire Pers Leuven DB - UniCat KW - 519.672 KW - Mechanical methods of calculation, e.g. slide rules, desk calculators KW - 519.672 Mechanical methods of calculation, e.g. slide rules, desk calculators UR - https://www.unicat.be/uniCat?func=search&query=sysid:2121946 AB - ER -