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  1. The effect of the age of sire and dam on the quality of offspring in dairy cows...
    By: Allen, Charles Loring,
    Publication info: Washington, D. C.,1922.
    Holding Institution: Library of Congress
    BHL Collections: Library of Congress
    View Book
  2. The effect of the age of sire and dam on the quality of offspring in dairy cows ...
    By: Allen, Charles Loring,
    Publication info: Washington, D.C.,1922
    Holding Institution: University of California Libraries (archive.org)
    View Book