TY  - BOOK
AU  - Wittrock, M.C.
AU  - 
TI  - Evalution of Instruction
U1  - 371.3.001.4(082.2) 
PY  - 1970///
CY  - New York
PB  - Holt, Rinehart and Winston, Inc.
KW  - Evalution of Instruction
ER  -