Yazar
Harold Wayne Youngberg
8 cilt bulundu.
Harold Wayne Youngberg · Agricultural Experiment Station, Oregon State University
11 sayfa · 1985
Grasses / Turfgrasses / Seeds / Yields / Varieties
Harold Wayne Youngberg · Oregon State University, Cooperative Extension Service
Sayfa sayısı yok · 1972
Alfalfa / Clover / Seeds / Inoculation / Rhizobium
Harold Wayne Youngberg · Oregon State University, Cooperative Extension Service
Sayfa sayısı yok · 1964
Seeds / Certification / Grasses / Legumes
Harold Wayne Youngberg · Oregon State University Extension Service
12 sayfa · 1977
Composition / Straw / Grasses / Straw as feed
Harold Wayne Youngberg · Oregon State University, Cooperative Extension Service
Sayfa sayısı yok · 1967
Grain / Control / Storage / Preservation / Diseases and pests
Harold Wayne Youngberg · Agricultural Experiment Station, Oregon State University
15 sayfa · 1986
Seeds / Yields / Varieties / Testing / Forage plants
Harold Wayne Youngberg · Oregon State University, Cooperative Extension Service
Sayfa sayısı yok · 1964
Seeds / Quality / Grasses / Legumes