TY  - BOOK
AU  - Punch,Keith F..
TI  - Introduction to social research : quantitative and qualitative approaches / 
SN  - 0761958126
U1  - 001.433 
PY  - 1998///
CY  - London : 
PB  - Sage Publications , 
KW  - RESEARCH METHODS
N1  - NULL
ER  -