Harlequin cabbage bug and its control
Chittenden, F.H.
Harlequin cabbage bug and its control - Washington 1920 - 1-16 p. - Cabbage United States Department of Agriculture. Farmers Bulletin No. 1061 .
Harlequin cabbage bug and its control - Washington 1920 - 1-16 p. - Cabbage United States Department of Agriculture. Farmers Bulletin No. 1061 .