TY  - BOOK
AU  - Yin, Robert K
TI  - Case study research: design and methods
SN  - 0803956630
U1  - 300.722 Y4C2 
PY  - 1989///
CY  - London
PB  - Sage Pub
KW  - Research Methodology
KW  - Social Science
KW  - Case Study Research
ER  -