Protective functions of Forests (Introductory Paper Contributed to the United Nations Scientific Conference on Resources, 1949)

Eitemau Tebyg

• Contributions from the United States national herbarium
  gan: Standley, Paul C.
  Cyhoeddwyd: (1926)
• Proceedings of the United Nations Scientific Conference on the Conservation and Utilization of Resources from 17 August-6 September 1949 held at Lake Success, New York.
  Cyhoeddwyd: (1950)
• United Nations Educational Scientific and Cultural Organization
  gan: Raheja, P.C
• Introductory microbiology
  gan: Ross, Frederick C.
  Cyhoeddwyd: (1983)
• Report on the United Nations technical conference on the conservation of the living resources of the sea
  Cyhoeddwyd: (1955)