Dangos 1 - 2 canlyniadau o 2 ar gyfer chwilio 'D Gumpf', amser ymholiad: 0.02e Mireinio'r Canlyniadau
  1. 1
    Occurrence of in periwinkle in California

    Occurrence of in periwinkle in California gan A Granett, R Blue, M Harjung, E Calavan, D Gumpf

    Cyhoeddwyd 1976-03-01
    Cael y testun llawn
    Erthygl
  2. 2
    Leafhopper—natural vector of citrus stubborn disease?

    Leafhopper—natural vector of citrus stubborn disease? gan G Kaloostian, G Oldfield, H Pierce, E Calavan, A Granett, G Rana, D Gumpf

    Cyhoeddwyd 1975-02-01
    Cael y testun llawn
    Erthygl

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