TY  - BOOK
AU  - Patton, Michael Quinn
TI  - Qualitative evaluation and reserach methods
SN  - 08039377792
U1  - 001.42 
PY  - 1986///
CY  - London
PB  - Sage Publications
KW  - Data collection
KW  - Evaluation research
KW  - Interpretation
KW  - Social sciences
ER  -