How insects affect the cotton plant and means of combating them
Pierce, W.D.
How insects affect the cotton plant and means of combating them - Washington 1917 - 1-28 p. - Insect, Cotton, Plant United States Department of Agriculture. Farmers Bulletin No. 890 .
How insects affect the cotton plant and means of combating them - Washington 1917 - 1-28 p. - Insect, Cotton, Plant United States Department of Agriculture. Farmers Bulletin No. 890 .