TY  - BOOK
AU  - Russwurm,Lorne H.
AU  - Sommerville,Edward
TI  - Man's Natural Environment: a systems approach 
SN  - 0878720707
U1  - 550 22
PY  - 1974///
CY  - North Scituate, Mass.
PB  - Duxbury Press
KW  - Physical geography
KW  - Environmental protection
N1  - Includes bibliographical references and index
ER  -