TY  - BOOK
AU  - Gage,Nathaniel Lee
TI  - The natures of the evaluation process
T2  - IIEP seminar paper ; 
AV  - LB2822.75 G34 1975
PY  - 1975///
CY  - París
PB  - International Institute for Educational Planning
KW  - Evaluación educativa
ER  -