TY  - BOOK
AU  - Engelstad,O.P.
TI  - Nutrient mobility in soils: accumulation and losses 
T2  - SSSA special publication
U1  - 631.41  
PY  - 1970///
CY  - Madison, Wis.
PB  - Soil Science Society of America
KW  - Plant nutrition
KW  - Soil moisture
ER  -