TY  - BOOK
AU  - Healey,Joseph F.
TI  - The essentials of statistics: a tool for social research 
SN  - 0495601438
PY  - 2010///
CY  - Belmont, CA
PB  - Wadsworth/Cengage Learning
KW  - Social sciences
KW  - Statistical methods
KW  - Statistics
N1  - Includes index
ER  -