Insects Effecting Greenhouse Plants
Gibson, A.
Insects Effecting Greenhouse Plants - Ottawa Ministry of Agriculture, Govt. of Canada 1940 - 88p. - (Farmers Bulletin No.94) .
595.7 GIB-I
Insects Effecting Greenhouse Plants - Ottawa Ministry of Agriculture, Govt. of Canada 1940 - 88p. - (Farmers Bulletin No.94) .
595.7 GIB-I