Relative proportions of sexes in litters of pigs
Contributors: Rommel, George M.
Series: Animal Industry Bur. Circ. No. 112
Publisher: U.S. G.P.O.
Published: 1907
Place of publication: [Washington, D.C.]
Format: Microform
Subjects: United States. Bureau of Animal Industry -- Public records.; Swine -- Sexing.