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By "Nefflen, John."
A method of increasing the yield of the milch-cow, by selecting the proper animals for the dairy; according to Guenon's discovery. Improved and simplified as classified and arranged by John Nefflen.
By: Nefflen, John. - Guènon, Francois, - YA Pamphlet Collection (Library of Congress)
Publication info: Philadelphia,C.B. Rogers,1853.
Contributed by: Library of Congress