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