TY  - GEN
AU  - Sommer , BarbaraSommer ,  Robert
TI  - A practical guide to behavioural research: tools and techniques
SN  - 0195104196
U1  - 150.72 
PY  - 1997///
CY  - New York
PB  - University Press
KW  - PSYCHOLOGY - RESEARCH
KW  - PSYCHOLOGY
ER  -