TY  - BOOK
AU  - Patton,Michael Quinn
AU  - Patton,Michael Quinn
TI  - Qualitative evaluation and research methods
SN  - 0803937792
PY  - 1990///
CY  - Newbury Park
PB  - Sage Publications
KW  - Social sciences
KW  - Methodology
KW  - Evaluation research (Social action programs)
N1  - Rev ed. of : Qualitative evaluation methods, 1980
ER  -