TY  - BOOK
AU  - Hull,Clark Leonard
TI  - Principles of behavior: An introduction to behavior theory 
T2  - The Century psychology series
U1  - 150.1943 
PY  - 1943///
CY  - New York
PB  - D. Appleton-Century Company, incorporated
KW  - Behavior
N1  - "References" at end of each chapter
ER  -