TY  - BOOK
AU  - Blalock Hubert M Ed.
TI  - Sociological theory and research :  A critical appraisal   
T2  - Amercian Sociological Association publication
U1  - Yb4, M0 
PY  - 1980///
CY  - New York
PB  - Free Press        
N1  - Bibliography P383-434
ER  -