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By "Lewallen, W. M., "
Studies on the biology of the Texas-fever tick. (Supplementary report.) By H. W. Graybill ... and W. M. Lewallen.
By: Graybill, Harry Webster. - Lewallen, W. M.,
Publication info: Washington,Govt. print. off.,1912.
Contributed by: Library of Congress
BHL Collections: Library of Congress