TY  - BOOK
AU  -  Ball Samuel 
TI  - Assesing and interpreting outcomes
SN  - 875898564
U1  - 519.7 
PY  - 1981///
CY  - San Francisco
PB  - Jossey-Bass
KW  - Evaluation
KW  - Program Evaluation
N2  -  Program Evaluation, Evaluation
ER  -