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R. C. Roark

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A Review of the Insecticidal Uses of Rotenone and Rotenoids from Derris, Lonchocarpus (Cube and Timbo), Tephrosia, and Related Plants, Vol. 8 Hymenoptera (Classic Reprint)
List of Common Names Used for Species of Derris in Connection with Insecticidal Properties (Classic Reprint)
A Review of Information on Anabasine (Classic Reprint)
The History of the Use of Derris As an Insecticide, Vol. 2 The Period 1919-1928 (Classic Reprint)
A Review of the Insecticidal Uses of Rotenone and Rotenoids from Derris, Lonchocarpus (Cube and Timbo), Tephrosia, and Related Plants, Vol. 1 Collembola, Orthoptera, Dermaptera, Odonata, Isoptera, Corrodentia, and Mallophaga (Classic Reprint)