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THE DISTRIBUTION AND SAMPLING OF INSECT POPULATIONS IN THE FIELD WITH SPECIAL REFERENCE TO THE AMERICAN BOLLWORM, HELIOTHIS OBAOLETA FABR. |
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| Authors: | JOSEPH MARSHALL M.Sc A.E.C.S. |
| Affiliation: | Insect Pest Control Department, Empire Cotton Growing Corporation, Barberton, South Africa |
| Abstract: | |
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