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		No cover image available Tests of various aliphatic compounds as fumigants by Roark,, R.C., Cotton, R.T Series: United States Department of A Material type: Text; Format: print ; Literary form: Not fiction Publication details: Washington 1929 Availability: Items available for loan: Prof. M S Swaminathan Library, ICAR: Indian Agricultural Research Institute (1). Place hold Add to cart (remove)

		No cover image available Adulteration of insect powder with powdered daisy flowers (Chrys-anthemum leucanthemum L.) by Roark, R.C., Keenan, G.L Series: Insect, Daisy, Flower United States Department of Agriculture. Bulletin No. 795 Material type: Text Publication details: Washington 1919 Availability: Items available for loan: Prof. M S Swaminathan Library, ICAR: Indian Agricultural Research Institute (1)Call number: 577 X-I. Place hold Add to cart (remove)

		No cover image available Digest of the literature of derris species used as insecticides, 1747-1931 by Roark, R.C Series: Dorris, Insecticides United States Department of Agriculture. Miscellaneous Publication No. 120 Material type: Text Publication details: Washington 1932 Availability: Items available for loan: Prof. M S Swaminathan Library, ICAR: Indian Agricultural Research Institute (1)Call number: 583 X-1. Place hold Add to cart (remove)

ICAR-Indian Agricultural Research Library