Aphids on leafy vegetables
Reid, W.J., Cuthbert, F.P.
Aphids on leafy vegetables How to control them - Washington 1966 - 1-16 p. - Vegetable United States Department of Agriculture. Farmers Bulletin No. 2148 .
Aphids on leafy vegetables How to control them - Washington 1966 - 1-16 p. - Vegetable United States Department of Agriculture. Farmers Bulletin No. 2148 .