Insect Behaviour as a Factor in Applied Entomology [microform]C. Gordon (Charles Gordon) . HewittHäftad209 kr
Control of Insect Pests in Canada [microform]C. Gordon (Charles Gordon) . Hewitt, Canada Division of Entomology, Dominion Experimental Farms and StatiHäftad209 kr
Instructions to Importers of Trees, Plants and Other Nursery Stock Into Canada [microform]C. Gordon (Charles Gordon) . Hewitt, Canada Division of EntomologyHäftad209 kr
Honey Bee [microform]C. Gordon (Charles Gordon) . Hewitt, Canada Division of Entomology, Dominion Experimental Farms and StatiHäftad219 kr
Insect Food of Fresh-water Fishes [microform]C. Gordon (Charles Gordon) . Hewitt, Canada Commission of ConservationHäftad209 kr
Regulations Under the Destructive Insect and Pest Act, With Instructions to Importers and Exporters of Trees, Plants and Other Nursery Stock [microform]C. Gordon (Charles Gordon) . Hewitt, Canada Division of EntomologyHäftad209 kr
Review of Applied Entomology in the British Empire [microform]C. Gordon (Charles Gordon) . HewittHäftad209 kr
Applied Entomology in Canada [microform]C. Gordon (Charles Gordon) . Hewitt, Canada Division of EntomologyHäftad209 kr