TY  - BOOK
AU  - YIN Robert K
TI  - Case study research:  Design and methods   
SN  - 076192552X
U1  - Eb4, P3 
PY  - 2003///
CY  -  New Delhi 
PB  - Sage Publication        
KW  - Geography
N1  - Bibliography P 167-174
ER  -