Volume 18 Number 6

Research Papers

• WITHCES' BROOM DISEASE INVESTIGATIONS 1. Seasonal Variations in Intensity of Infection and their Effect on Control Methods

  R. E. D. Baker, S. H. Crowdy, C. A. Thorold

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• THE GALL MIDGES (DIPTERA, CECIDOMYIDAE) OF ECONOMIC IMPORTANCE IN THE WEST INDIES

  E. McC. Callan

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