TY  - BOOK
AU  - Nachmias David
AU  -  Nachmias Chava
TI  - Research methods in the social sciences
U1  - #:f, L62 
PY  - 1976///
CY  - London
PB  - Edward Arnold      
KW  - SOCIAL SCIENCES
N1  - Appendix p301--316
ER  -