TY  - BOOK
AU  - Weiss,Carol H.
TI  - Evaluation research: methods for assessing program effectiveness
SN  - 0132921936
AV  - H62 .W3962 .W3962
U1  - 001.4/33 
PY  - 1972///]
CY  - Englewood Cliffs, N.J.
PB  - Prentice-Hall
ER  -