TY  - BOOK
AU  - Trudgill, Stephen Thomas.
TI  - Soil and vegetatin systems
T2  - Contemporany problems in geography
U1  - 631.43 
PY  - 1977///
CY  - Oxford
PB  - Clarendon
KW  - Diagnóstico foliar
KW  - Suelos y cultivos
ER  -