Yazar
william l ackerman
13 cilt bulundu.
William L. Ackerman · U.S. Agricultural Research Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.
115 sayfa · 1971
Breeding / Camellias / Genetics
William L. Ackerman · Yayınevi bilinmiyor
33 sayfa · 1957
Breeding / Peach / Nectarine / Fruit-culture / Varieties
William L. Ackerman · Yayınevi bilinmiyor
Sayfa sayısı yok · 1958
Varieties / Grapes / Breeding / Fruit-culture / Pears
William L. Ackerman · Yayınevi bilinmiyor
29 sayfa · 1955
Effect of temperature on / Statistics / Nectarine / Peach / Seedlings
William L. Ackerman · U.S. Plant Introduction Station, New Crops Research Branch, Crops Research Division, Agricultural Research Service, Dept. of Agriculture
45 sayfa · 1963
Breeding / Apples
William L. Ackerman · Yayınevi bilinmiyor
31 sayfa · 1953
Peach leaf-curl / Statistics / Peach / Diseases and pests
Robert L. Smith (agronomist), Lloyd E. Joley, William L. Ackerman · U.S. Plant Introduction Station, New Crops Research Branch, Crops Research Division, Agricultural Research Service
67 sayfa · 1964
Plum / Varieties
