TY  - BOOK
AU  - Skinner Brian J
TI  - Earth resources
T2  - Prentice Hall Foundaitons of earth sciences series
U1  - U673, M6 
PY  - 1986///
CY  - New Jersey 
PB  - Prentice Hall U S A     
KW  - Agricultural Geography
N1  - Bib p. 167-68; Appendix p. 109-73
ER  -