TY  - BOOK
AU  - Blalock Hubert M.
TI  - An introduction to social research
SN  - P-13-496828-X
AV  - HM 48  .B7 1970
PY  - 1970///
CY  - New Jersey
PB  - Prentice Hall
KW  - Sociology
KW  - Social research
ER  -