TY  - BOOK
AU  - Van Dalen,Deobold B.
AU  - Meyer, William J. 
TI  - Understanding educational research: an introduction 
T2  - McGraw-Hill series in education. Psychology and human development in education
U1  - 370.7 23
PY  - 1962///
CY  - New York
PB  - McGraw-Hill
KW  - Educational research
N1  - Includes index.
ER  -