TY  - BOOK
ED  - E.U.A. Soil Conservation Service
ED  - Cornell University. Ithaca, N.Y. Agronomy Department.
TI  - Keys to soil taxonomy
T2  - Technical monograph
PY  - 1987///
CY  - Ithaca, N.Y.
PB  - The Service
KW  - Suelos
KW  - Clasificación
ER  -