TY  - BOOK
AU  - Blalock,Hubert M
TI  - An introduction to social research
SN  - 013496828X
PY  - 1970///
CY  - Englewood Cliffs, N.J.
PB  - Prentice-Hall
KW  - Social sciences
KW  - Research
N1  - Includes bibliographical references
ER  -