TY - BOOK ID - 944687 TI - Content analysis: a technique for systematic inference from communications PY - 1972 SN - 0713420073 PB - London Batsford DB - UniCat KW - Quantitative methods in social research KW - Mass communications UR - https://www.unicat.be/uniCat?func=search&query=sysid:944687 AB - ER -