TY  - BOOK
AU  - Suchman,Edward A
TI  - Evaluative research: principles and practice in public service and social action programs 
U1  - 300.18 
PY  - 1976///, c1967
CY  - New York
PB  - Russell Sage Foundation
KW  - Ciencias sociales
KW  - Metodología
ER  -