TY  - SER
AU  - 
TI  - Biology and Fertility of Soils Vol. 11 (1-4)
U1  - 631 
PY  - 1991///
CY  - Wageningen
PB  - International Society of Soil Science
KW  - Fertility of Soils
KW  - Soil Science
KW  - Techniques, equipment & materials
ER  -