TY  - BOOK
AU  - Blalock Hubert M Ed.
AU  -  Blalock Ann B Ed.
TI  - Methodology in social research
T2  - McGraw-Hill series in sociology
U1  - Sigma b4, K8-K8;1 
PY  - 1968///
CY  - New York
PB  - McGraw-Hill USA        
KW  - Social Science
ER  -