TY  - BOOK
AU  - Krippendorff,Klaus
TI  - Content analysis: an introduction to its methodology 
SN  - 9781412983150 (pbk. : acidfree paper)
U1  - 401.4 KRI 23
PY  - 2013///
CY  - Los Angeles, London
PB  - SAGE
KW  - Content analysis (Communication)
ER  -