Yazar
william a zollinger
3 cilt bulundu.
Cilt sonuçları
How to select, grow, and manage replacement heifers
William A. Zollinger · Extension Service, Oregon State University
Sayfa sayısı yok · 1990
Heifers / Breeding / Fertility / Cattle / Selection
1986 Oregon IRM summary of beef herd data
William A. Zollinger · Oregon State University Extension Service
23 sayfa · 1987
Beef cattle / Beef industry / Economic aspects / Economic aspects of Beef industry / Oregon Integrated Resource Management Program
Using national sire summaries to improve selection skills
William A. Zollinger · Oregon State University Extension Service
Sayfa sayısı yok · 1990
Mathematical models / Breeding / Cattle / Bulls