TY  - BOOK
AU  - Krippendorff,Klaus
TI  - Content analysis: an introduction to its methodology 
SN  - 0761915443 (acid-free paper)
PY  - 2004///
CY  - Thousand Oaks, Calif.
PB  - SAGE
KW  - Content analysis (Communication)
N1  - Includes bibliographical references (p. 365-389) and index
ER  -