Special Public Works Programmes. (1989). Tree nurseries: An illustrated technical guide and training and training manual. International Labour Office.
Chicago-viite (17. p.)Special Public Works Programmes. Tree Nurseries: An Illustrated Technical Guide and Training and Training Manual. Geneva: International Labour Office, 1989.
MLA-viite (9. p.)Special Public Works Programmes. Tree Nurseries: An Illustrated Technical Guide and Training and Training Manual. International Labour Office, 1989.
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