TY  - BOOK
AU  - WILLIAM RAY AND RICHARD RAVIZZA
TI  - METHODS
SN  - 0534040411
U1  - 150.72 RAY 
PY  - 1981///
CY  - Belmont, California
PB  - Wadsworth Publishing Company
KW  - Biblography
KW  - Psychology
KW  - Experimental
KW  - Research
ER  -