000 00459nam a2200181Ia 4500
008 180116s1971 xxu||||| |||| 00| 0 eng d
082 _a001.51
_bBER
100 _a Berelson Bernard
245 _aContent analysis in communication research
_b
250 _a
260 _aNew York
_bHafner Publishing Company
_c1971
300 _a220 p.
_b23 cm.
440 _a
_v
500 _a
520 _a Communication
650 _aCommunication
906 _a3342
_b
_c
999 _c16267
_d16267