TY  - BOOK
AU  - Dalen,Deobold B.Van
AU  - Meyer,William J.
TI  - Understanding educational research : : an introduction 
U1  - 370.78 
PY  - 1962///.
CY  - New York : 
PB  - Mc Graw - Hill Book Company, Inc., 
KW  - Education--Research
N1  - Includes index.
ER  -