R. C. Roark

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The adulteration of insect powder with powdered daisy flowers (Chrysanthemum leucanthemum L.)

by R. C. Roark First published in 1919 — 2 editions
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A second digest of information on allethrin and related compounds

by R. C. Roark First published in 1955 — 1 edition
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An index of patented mothproofing materials

by R. C. Roark First published in 1931 — 1 edition
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List of publications of the Division on Insecticide Investigations, July 1, 1927, to June 30, 1937

by R. C. Roark First published in 1937 — 1 edition
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A bibliography of chloropicrin, 1932-1934: first supplement to U.S. Dept. Agr. misc. pub. 176

by R. C. Roark First published in 1935 — 1 edition
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A bibliography of chloropicrin, 1848-1932

by R. C. Roark First published in 1934 — 1 edition
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A digest of the literature of derris (deguelia) species used as insecticides, 1747-1931

by R. C. Roark First published in 1932 — 1 edition
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A list of publications, on 2, 2-bis (parachlorophenyl)-1, 1, 1-trichloroethane (called DDT) from 1874 to April 30, 1944, inclusive

by R. C. Roark First published in 1944 — 1 edition

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Tests of various aliphatic compounds as fumigants

by R. C. Roark First published in 1929 — 1 edition

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Lonchocarpus species (Barbasco, Cube, Haiari, Nekoe, and Timbo) used as insecticides

by R. C. Roark First published in 1936 — 1 edition
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Devil's shoestring (Cracca virginiana L.): a potential souce of rotenone an related insecticides

by R. C. Roark First published in 1934 — 1 edition

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Lonchocarpus (Barbasco, Cube, and Timbo): a review of recent literature

by R. C. Roark and United States. Bureau of Entomology and ... First published in 1938 — 1 edition

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References to reviews and popular articles on Derris

by R. C. Roark and United States. Bureau of Entomology and ... First published in 1938 — 1 edition

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OLID: OL2370630A

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Created April 1, 2008
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September 7, 2008	Edited by RenameBot	fix author name
April 1, 2008	Created by an anonymous user	initial import

R. C. Roark

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