Repellents for protecting animals from the attacks of flies
Graybill, H.W.
Repellents for protecting animals from the attacks of flies - Washington 1914 - 1-26 p. - Animals United States Department of Agriculture. Bulletin No. 131 .
Repellents for protecting animals from the attacks of flies - Washington 1914 - 1-26 p. - Animals United States Department of Agriculture. Bulletin No. 131 .