Bear, Firman E.
Hunger signs in crops: a symposium - Washington The american society of agronomy 1949 - xvi,390p.
Deficiency diseases in plants
Plants--Nutrition
Nutrition disorders in plants
581.2108 / BEA/H
Hunger signs in crops: a symposium - Washington The american society of agronomy 1949 - xvi,390p.
Deficiency diseases in plants
Plants--Nutrition
Nutrition disorders in plants
581.2108 / BEA/H