TY  - BOOK
AU  - MARTIN,Patricia Yancey
AU  - O'CONNOR,Gerald .G
TI  - The Social Environment: open systems application
SN  - 0582290147
U1  - 361.30973 
PY  - 1989///
CY  - London
PB  - Longman
KW  - Open systems application
N1  - Includes Reference and Index
ER  -