United states department of agriculture
Crops in peace and war:The yearbook of agriculture 1950-1951 - Washington D.C. United states government printing office 1950 - viii,942p.
Waste products
Agriculture--Research
Chemurgy
630.72 / UNI
Crops in peace and war:The yearbook of agriculture 1950-1951 - Washington D.C. United states government printing office 1950 - viii,942p.
Waste products
Agriculture--Research
Chemurgy
630.72 / UNI