TY  - BOOK
AU  - Heimstra,Norman
AU  - Ellingstad,Vernon S.- jtaut
TI  - Human behavior : : Systems approach
SN  - 0-8185-0015-8
U1  - 159 
PY  - 1972///
CY  - California
PB  - Brooks/Cole Pulishing Company
KW  - Psychological System
KW  - Human Behavior
ER  -