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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

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Showing 261 to 270 of 1957 (0.043 seconds)

Spelling suggestions: "subject:"entomology"" "subject:"enthomology""

261

The effect of various levels of nitrogen, phosphorus and potassium on the fecundity of the two-spotted spider mite Tetranychus Bimaculatus Harvey.

Leroux, E. J. (Edgar Joseph), 1922- January 1952 (has links)
No description available.
Entomology.
262

The pentatomidae of Quebec (Hemiptera - Heteroptera).

Duncan, Joseph R. January 1942 (has links)
No description available.
Entomology.
263

External morphology of the tarnished plant bug Lygus Pratensis Linn.

Doyle, Joseph Andre. January 1942 (has links)
No description available.
Entomology.
264

Further refinement of a technique for testing contact insecticides.

McLeod, William Sterling. January 1943 (has links)
No description available.
Entomology.
265

I. A list of Phalaenidae of Prince Edward Island. II. The external morphology of Apamea americana Speyer. III. A study of the external genitalia of sixty-three species of Phalaenidae

Wigmore, Robert Hazen. January 1950 (has links)
No description available.
Entomology.
266

The biology of Microbracon Cephi Gahan, an important native parasite of the wheat stem sawfly, Cephus Cinctus Nort.

Nelson, William Arnold. January 1948 (has links)
No description available.
Entomology.
267

The external anatomy of the four-lined leaf bug.

Matthewman, William Grenfell. January 1939 (has links)
No description available.
Entomology.
268

The Lauxaniidae of Eastern Canada.

Shewell, Guy E. January 1937 (has links)
No description available.
Entomology.
269

Studies on the insecticidal action of DDT (1,1, BIS (4,4’ Dichlorophenyl) 2,2,2- Trichloroethane) and regulated compounds, with a view to correlating this action with chemical structure.

Proverbs, Maurice Desmond. January 1946 (has links)
No description available.
Entomology.
270

The influence of the spray program on the natural control of oystershell scale, Lepidosaphes ulmi (L.).

Lord, Frank Tennant. January 1947 (has links)
No description available.
Entomology.

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