TY  - BOOK
AU  - Greenwood,Ned H.
AU  - Edwards,J.M.B.
TI  - Human environments and natural systems
SN  - 0878721681
U1  - 301.31 
PY  - 1979///
CY  - North Scituate, Mass.
PB  - Duxbury Press
KW  - Human ecology
KW  - Environmental protection
KW  - Land use
N1  - Includes biliographies and index
ER  -