TY  - BOOK
AU  - Jeffrey,David W.
TI  - Soil-plant relationships: an ecological approach 
SN  - 0881920750
U1  - 581.526404 
PY  - 1987///
CY  - London ; Sydney
PB  - Croom Helm ; Portland, OR : Timber Press, 
KW  - ECOLOGIA DEL SUELO
KW  - ECOLOGIA VEGETAL
ER  -