TY  - BOOK
AU  - Morell Jonathan A
TI  - Program evaluation in social research
T2  - Pergamon general psychology series
SN  - 0080233600
U1  - Sigma b4, L9 
PY  - 1979///
CY  - New York
PB  - Pergamon press USA       
KW  - Social Science
N1  - Bibliography P 175-84
ER  -