TY  - BOOK
AU  - Sommer,Robert
TI  - A practical guide to behavioral research: tools and techniques 
SN  - 0195104196
AV  - H 62 .S724
PY  - 1997///
CY  - New York
PB  - OUP
KW  - Social sciences --Research
N1  - Includes index
ER  -