TY  - BK
ED  - World Congress of Soil Science, 15
TI  - Commission III:  Poster sessions
SN  - 968-6201-19-X
U1  - 631.4 
PY  - 1994///
CY  - Acapulco, Gro. (Mexico)
PB  - International Society of Soil Science|Mexican Society of Soil Science|INEGI, 
N1  - V. 4b
ER  -