TY  - GEN
AU  - Schroeder, Diedrich
TI  - Soils : facts and concepts 
SN  - 3906535010
U1  - 631.4 
PY  - 1984///
CY  - Bern
PB  - International  Potash Institute
KW  - Soil sciences
KW  - Specific technique; apparatus, equipments, materials
ER  -