TY  - BOOK
AU  - Chess,Wayne A.
AU  - Norlin,Julia M.
TI  - Human behavior and the social environment: a social systems model 
SN  - 0205128246
PY  - 1991///
CY  - Boston
PB  - Allyn and Bacon
KW  - Social service
KW  - Social systems
KW  - Mathematical models
KW  - Human behavior
ER  -