Dangos 1 - 2 canlyniadau o 2 ar gyfer chwilio 'Perman, Roger, 1949-', amser ymholiad: 0.02e Mireinio'r Canlyniadau
  1. 1
    Natural resource and environmental economics /
    gan Perman, Roger, 1949-
    Cyhoeddwyd 2003
    Rev. ed. of: Natural resource and environmental economics / Roger Perman, Yue Ma, James McGilvray. 1996.
    Llyfr
  2. 2
    Natural resource and environmental economics /
    gan Perman, Roger, 1949-
    Cyhoeddwyd 2011
    Prev. ed. entered under author: Perman, Roger, 1949-
    Llyfr
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