TY  - BOOK
AU  - Gay,L.R.
TI  - Educational research: Competencies for analysis & application 
SN  - 0675080215
AV  - LB1028 G38 1981
PY  - 1981///
CY  - Columbus, ohio
PB  - Merrill
KW  - Educación
KW  - Investigación
ER  -