TY  - BOOK
AU  - JOHNSON BURKER & CHRISTENSEN LARRY
TI  - EDUCATIONAL RESEARCH:QUANTITATIVE,  QUALITATIVE AND MIXED APPROACHES ED. 4TH 
U1  - 370.72 JOH/EDU 
PY  - 2012///
CY  - LOS ANGELES
PB  -  SAGE PUB
ER  -