TY  - SER
AU  - Simonson, R. W.,
TI  - Geoderma Vol. 37(1-4), Vol. 38(1-4)
U1  - 631 
PY  - 1986///
CY  - Amsterdam
PB  - Elsevier Scientific Publishing Co.
KW  - Soil Science
KW  - Techniques, equipment & materials
ER  -