TY  - SER
AU  - Simonson, R. W.,
TI  - Geoderma Vol. 46(1-4), Vol. 47 (1-4)
U1  - 631 
PY  - 1990///
CY  - Amsterdam
PB  - Elsevier
KW  - Soil Science
KW  - Techniques, equipment & materials
ER  -