TY  - BOOK
AU  - Festinger Leon ed
AU  -  Katz Daniel ed
TI  - Research methods in the behavioral sciences
U1  - b48(S), J3-;3 (ES) 
PY  - 1953///
CY  - New York
PB  - Holt, Rinehart     
KW  - RESEARCH METHODS
ER  -