TY  - BOOK
AU  - Gay,L.R.
TI  - Educational research: Competencies for analysis and application 
SN  - 0023408006
AV  - LB1028 G38 1992
PY  - 1992///
CY  - New York
PB  - Macmillan, Maxwell macmillan
KW  - Educación
KW  - Investigación
ER  -