by John Whittemore Gowen , Iowa State College
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Mental attainments of college students i...
Milk secretion
Manual of dairy cattle breeding
A resume of cattle inheritance
Heterosis; a record of researches direct...
Polyploid and Hybrid Genomics
Heterosis
Composite breeds to use heterosis and br...
Heterosis and Hybrid Seed Production in ...
Molecular biology and the origin of spec...
Heterosis breeding