Hog-lice and hog mange methods of control and eradication
Imes, Marion
Hog-lice and hog mange methods of control and eradication - Washington 1920 - 1-28 p. - Mange, Eradication United States Department of Agriculture. Farmers Bulletin No. 1085 .
Hog-lice and hog mange methods of control and eradication - Washington 1920 - 1-28 p. - Mange, Eradication United States Department of Agriculture. Farmers Bulletin No. 1085 .