TY  - BOOK
AU  - Berelson,Bernard
TI  - Content analysis in communication research
PY  - 1952///
CY  - Glencoe, Ill.
PB  - Free Press
KW  - Communication
N1  - 'A revision and expansion of the author's The analysis of communication content, issued in mimeographed form in 1948.'; Bibliography: p. 199-220
ER  -