TY  - BOOK
AU  - Blalock,Hubert M.
AU  - Blalock,Ann B.
TI  - Methodology in social research,
T2  - McGraw-Hill series in sociology
U1  - 307.2 
PY  - 1968///]
CY  - New York
PB  - McGraw-Hill
KW  - Social sciences
KW  - Research
KW  - Methodology
ER  -