TY  - BOOK
AU  - Worthen,R. Blaine
AU  - Sanders R. James
TI  - Educational Evaluation: Alternative Approaches and Practical Guidelines 
AV  - LB1028 .W6 1987
PY  - 1987///
CY  - New York
PB  - Longman Group Ltd
KW  - Theory and practice of Education
N1  - includes references and index
ER  -