Yazar
j g hawkes
29 cilt bulundu.
J. G. Hawkes · Belhaven
259 sayfa · 1990
Germplasm resources / Potatoes / Varieties / Plants, classification
J. G. Hawkes · Published for the Linnean Society of London by Academic Press
738 sayfa · 1979
Solanaceae / Congresses
J. G. Hawkes · Duckworth
284 sayfa · 1978
Rural Land use / Agricultural conservation / Conservation of natural resources / Congresses / Forests and forestry
J. G. Hawkes · Published for the Botanical Society of the British Isles by Pergamon Press
183 sayfa · 1966
Plants / Plantes / Classification / Cormophyta / Voortplanting (biologie)
J. G. Hawkes · Harvard University Press
184 sayfa · 1983
Evolution / Germplasm resources / Field crops / Varieties / Plants, cultivated
J. G. Hawkes, J.G. Hawkes, N. Maxted, B.V. Ford-Lloyd · J G Hawkes
280 sayfa · 2000
Genetic resources conservation / Plant Germplasm resources / Germplasm resources conservation / Genetics (non-medical) / Plant ecology
J. G. Hawkes · School of Agriculture
Sayfa sayısı yok · 1941
Potatoes / Empire Potato Collecting Expedition to South America (1938-1939) / Balls' Mexican Expedition, 1938 / Empire Potato Collecting Expedition to South America (1938-1939) (uri) http://id.loc.gov/authorities/names/no2004090846 (uri) http://viaf.org/viaf/sourceID/LC|no2004090846
J. G. Hawkes · Rowman & Littlefield Publishers, Incorporated
Sayfa sayısı yok · 1978
Environmental protection / Conservation of natural resources
J. G. Hawkes · International Board for Plant Genetic Resources
442 sayfa · 1983
Bibliography / Plant Germplasm resources / Crops / Germplasm resources / Preservation
J. G. Hawkes · World Bank
115 sayfa · 1985
Agriculture / International cooperation / Plant Germplasm resources / Research
J. G. Hawkes · Allanheld : distribution, Universe Books
284 sayfa · 1978
Rural Land use / Agricultural conservation / Conservation of natural resources / Congresses / Forests and forestry
J. G. Hawkes · Clarendon Press
472 sayfa · 1989
Breeding / Classification / Potatoes / Agriculture, economic aspects, bolivia
J. G. Hawkes · Agrico Research BV
224 sayfa · 2003
Potatoes / Scientific expeditions / Plant collecting / Empire Potato Collecting Expedition to South America (1938-1939)