TY  - GEN
AU  - Fraenkel , Jack R.
AU  - Wallen , Norman E.
TI  - Student mastery activities: how to design and evaluate research in education
SN  - 0072981849
U1  - 370.7 
PY  - 2006///
CY  - New York
PB  - McGraw Hill
KW  - Education - Research
KW  - Education
ER  -