TY  - GEN
AU  - Hopkins,D.P.
TI  - Chemicals humus, and the soil: A simple presentation of contemporary knowledge and opinions about fertilizers, manures and soil fertility
PY  - 1945///
CY  - London
KW  - Chemicals
KW  - Soil
KW  - Fertilizers
KW  - Manures
KW  - Soil Fertility
ER  -