Southern pine beetle
Hopkins, A.D.
Southern pine beetle A menace to the pine timber of the southern states - Washington 1921 - 1-15 p. - Pine, Beetle United States Department of Agriculture. Farmers Bulletin No. 1188 .
Southern pine beetle A menace to the pine timber of the southern states - Washington 1921 - 1-15 p. - Pine, Beetle United States Department of Agriculture. Farmers Bulletin No. 1188 .