Dangos 1 - 2 canlyniadau o 2 ar gyfer chwilio 'Needham, Paul Robert', amser ymholiad: 0.01e Mireinio'r Canlyniadau
  1. 1

    A guide to the study of fresh-water biology gan Needham, James George, 1868-1956

    Cyhoeddwyd 1962
    Llyfr

    A guide to the study of fresh-water biology
  2. 2

    Rainbow trout in Mexico and California, with notes on the cutthroat series gan Needham, Paul Robert

    Cyhoeddwyd 1959
    Llyfr

    Rainbow trout in Mexico and California, with notes on the cutthroat series

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