Your search returned 7 results.

Lonchocarpus species : barbasco, cube, haiari, nekoe, y timbo, used as insecticides / by R. C. Roark by

Roark, R. C

Material type:

Text; Format: print ; Literary form: Not fiction

Publication details: EUA : Department of Agriculture

Availability: Items available for loan: Parasitologia Agricola (1)Call number: PA 632.951 R63.

A digest of information on hexaethyl tetraphosphate / R. C. Roark by

Roark, R. C

Series: EUA. Dept. of Agriculture E-721

Material type:

Text; Format: print ; Literary form: Not fiction

Publication details: Washington : Department of Agriculture

Availability: Items available for loan: Parasitologia Agricola (1).

A third digest of the literature on DDT (January through june 1945) / R. C. Roark, N. E. McIndoo by

Material type:

Text; Format: print ; Literary form: Not fiction

Publication details: Washington : Department of Agriculture

Availability: Items available for loan: Parasitologia Agricola (1)Call number: PA 632.951 R64.

A third list of publications on DDT January through june 1945 / R. C. Roark by

Roark, R. C

Series: EUA. Department of Agriculture E; 674

Material type:

Text; Format: print ; Literary form: Not fiction

Publication details: Washington : Department of Agriculture

Availability: Items available for loan: Parasitologia Agricola (1).

The history of the use of derris as an insecticide / by R. C. Roark by

Roark, R. C

Series: EUA. Dep. of Agri. E-468

Material type:

Text; Format: print ; Literary form: Not fiction

Publication details: Washington : Department of Agriculture

Availability: Items available for loan: Parasitologia Agricola (1).

A bibliography of nicotine / R. L. Busbey, N. E. McIndoo, R. C. Roark by

Material type:

Text; Format: print ; Literary form: Not fiction

Publication details: Washington : Department of Agriculture

Availability: Items available for loan: Parasitologia Agricola (2).

Adulteration of insect powder with powdered daisy flowers (Chrysanthemum leucanthemum L.) / by R. C. Roark and G. L. Keenan by

Series: EUA. Dep. of Agri. Bull.; 795

Material type:

Text; Format: print ; Literary form: Not fiction

Publication details: Washington : Department of Agriculture

Availability: Items available for loan: Parasitologia Agricola (1).

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Your search returned 7 results.