TY  - BOOK
AU  - Levin,Jack
TI  - Elementary statistics in social research
SN  - 0060439858
PY  - 1977///
CY  - New York
PB  - Harper & Row
KW  - Social sciences
KW  - Statistical methods
KW  - Statistics
N1  - Includes index; Bibliography : p. 285-286
ER  -