Não informado. (1960). Bibliography. International Institute for Land Reclamation and Improvement.
Chicago-viite (17. p.)Não informado. Bibliography. Wageningen, Holanda: International Institute for Land Reclamation and Improvement, 1960.
MLA-viite (8. p.)Não informado. Bibliography. International Institute for Land Reclamation and Improvement, 1960.
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