TY  - BOOK
ED  - Proceedings of a symposium sponsored by Division S-5 and S-9 ; in San Antonio, Texas / 21-26 Oct. 1990.
TI  - Soil Color
SN  - 0-89118-802-9
U1  - 631.4 
PY  - 1993///
CY  - USA
PB  - Soil Science Society of America
KW  - Edafología
KW  - Suelo
KW  - color
ER  -