TY  - BOOK
AU  - Wallen,Norman E.
AU  - Fraenkel,Jack R.
TI  - Educational research: a guide to the process 
SN  - 0070679452
AV  - LB1028  .W35 1991
PY  - 1991///
CY  - New York
PB  - McGraw Hill
KW  - Educational research
ER  -