Bibliography of the spotted alfalfa aphid : Therioaphis maculta (Buckton) (Homop
Davis, D.W.
Bibliography of the spotted alfalfa aphid : Therioaphis maculta (Buckton) (Homop - Illinois 1972 - 14 p. - No. 87; Illinois Natural Histo .
Bibliography of the spotted alfalfa aphid : Therioaphis maculta (Buckton) (Homop - Illinois 1972 - 14 p. - No. 87; Illinois Natural Histo .