Dangos 1 - 2 canlyniadau o 2 ar gyfer chwilio 'BERGSMA, E.', amser ymholiad: 0.01e Mireinio'r Canlyniadau
  1. 1
    Aerial photo-interpretation for soil erosion and conservation survey part II: erosion factors

    Aerial photo-interpretation for soil erosion and conservation survey part II: erosion factors gan BERGSMA, E.

    Llyfr
    Ychwanegu at ffefrynnau
    Wedi'i Gadw mewn:
  2. 2
    Aerial photo-interpretation for soil erosion and conservation survey part I: soil erosion features

    Aerial photo-interpretation for soil erosion and conservation survey part I: soil erosion features gan BERGSMA, E.

    Llyfr
    Ychwanegu at ffefrynnau
    Wedi'i Gadw mewn:

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