Copenhagen Symposium on Functioning of Terrestrial Ecosystems at the Primary Production Level & Eckardt, F. (1968). Functioning of terrestrial ecosystems at the primary production level: Proceedings of the Copenhagen Symposium held in Copenhagen from 24 to 30 July 1965. United Nations Educational, Scientific and Cultural Organization.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Copenhagen Symposium on Functioning of Terrestrial Ecosystems at the Primary Production Level ба F.E Eckardt. Functioning of Terrestrial Ecosystems at the Primary Production Level: Proceedings of the Copenhagen Symposium Held in Copenhagen from 24 to 30 July 1965. Paris: United Nations Educational, Scientific and Cultural Organization, 1968.
MLA -ийн эшлэл (9 дэх хэвлэлт)Copenhagen Symposium on Functioning of Terrestrial Ecosystems at the Primary Production Level ба F.E Eckardt. Functioning of Terrestrial Ecosystems at the Primary Production Level: Proceedings of the Copenhagen Symposium Held in Copenhagen from 24 to 30 July 1965. United Nations Educational, Scientific and Cultural Organization, 1968.