TY  - BOOK
AU  - Sachs, Ward H.
TI  - Effect of cultivation on moisture and nitrate of field soil
U1  - PA-C 631.4 B85 
CY  - Arkansas
PB  -  University of Arkansas College of Agriculture. Agricultural Experiment Station
KW  - Suelos
KW  -  EUA
KW  -  investigación
KW  -  nitrogeno en
N1  - Enc. con otros impresos similares
ER  -