TY  - BOOK
AU  - Hartman,John J
AU  - Hedblom,Jack H.
TI  - Methods for the social sciences: a handbook for students and non-specialists 
AV  - H61 .M484 1979
PY  - 1979///
CY  - Westport, Connecticut
PB  - Greenwood Press
N1  - 4; Bibliography: pages 383.-391; 2
ER  -