TY  - BOOK
AU  - Festinger Leon Ed
AU  -  Katz Daniel Ed
TI  - Research methods in the behavioral sciences
U1  - Sigma:(:f), J3 
PY  - 1966///
CY  - New York
PB  - Holt Rinehart and Winston USA   
KW  -  RESEARCH METHODS
KW  - SOCIAL SCIENCES
ER  -