TY  - BOOK
AU  - Eckhardt,Kenneth W.
AU  - Ermann M.David,
TI  - Social research methods: perspective, theory and analysis 
SN  - 0394312562 :
U1  - 300.18 
PY  - 1977///
CY  - New York
PB  - Random House
KW  - Social sciences
KW  - Methodology
KW  - Research
N1  - Includes index
ER  -