TY  - BOOK
AU  - Ralph W.Tyler
AU  - Tyler,Ralph W. 
TI  - Educational evaluation:  :  new roles, new means
AV  - LB5 .N25 68 
PY  - 1969///
CY  - Chicago
PB  - University of Chicago Press
KW  - Educational tests and measurements
N1  - Bibliographical footnotes
ER  -