Control of aphids on alfalfa in the antelope valley, California
Blanchard, R.A.
Control of aphids on alfalfa in the antelope valley, California - Washington 1934 - 1-7 p. - Aphids, United States Department of Agriculture. Circular No. 307 .
Control of aphids on alfalfa in the antelope valley, California - Washington 1934 - 1-7 p. - Aphids, United States Department of Agriculture. Circular No. 307 .