TY  - BOOK
AU  - Blalock H M
AU  - Blalock, H M
AU  - Blalock H M
TI  - Introduction to Social Research
U1  - 300.7/BLA 
PY  - 1970///
CY  - New Jersey
PB  - Prentice Hall Inc.
KW  - Social Research
ER  -