Bean ladybird and its control
Chittender, F.H.
Bean ladybird and its control - Washington 1919 - 1-7 p. - Bean United States Department of Agriculture. Farmers Bulletin No. 1074 .
Bean ladybird and its control - Washington 1919 - 1-7 p. - Bean United States Department of Agriculture. Farmers Bulletin No. 1074 .