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Ernst Gram
10 cilt bulundu.
Cilt sonuçları
Recognition of diseases and pests of farm crops
Ernst Gram · Blandford P., in association with the Danish Agricultural Information and Advisory Service Aids
128 sayfa · 1958
Injurious and beneficial Insects / Plant diseases / Long Now Manual for Civilization
Plant diseases in orchard, nursery and garden crops
Ernst Gram · Macdonald
618 sayfa · 1952
Diseases and pests / Fruit / Ornamental Plants / Plant diseases / Plants
Rodfrugternes sygdomme og skadedyr
Ernst Gram · Udgivet af det kgl. Danske Landhusholdningsselskab det Danske forlag
125 sayfa · 1944
Insect pests / Plant diseases / Root crops
Kartoflens sygdomme i billeder og tekst
Ernst Gram · Danske forlag og L.H.S.-forlag
108 sayfa · 1945
Diseases and pests / Potatoes / Solanaceae