"Vereinigte Staaten. Department of Agriculture." . . . . . "Breeding hard red winter wheats for winter hardiness and high yield, by Karl S. Quisenberry,... and J. Allen Clark" . . . . . . . "Breeding hard red winter wheats for winter hardiness and high yield" . . "Breeding hard red winter wheats for winter hardiness and high yield"@en . "Breeding hard red winter wheats for winter hardness and high yield" . . . . . . . . .