TY  - BOOK
AU  - Greenwood Ned H
AU  -  Edwards J M B
TI  - Human environment and natural systems :  A conflict   
U1  - U47, L3 
PY  - 1973///
CY  - Massachusetts
PB  - Duxbury          
KW  - Human Geography
N1  - Bib p. 395-407; Appendix p. 393-94; Glossary p. 409-17
ER  -