Showing 1 - 2 results of 2 for search 'Graaff, J. de', query time: 0.01s Refine Results
  1. 1

    The price of soil erosion an economic evaluation of soil conservation and watershed development by Graaff, J. de

    Published 1996
    Book

    The price of soil erosion an economic evaluation of soil conservation and watershed development
  2. 2

    Theoretical welfare economics. by Graaff, J. de V.

    Published 1957
    Book

    Theoretical welfare economics.

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