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.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCopenhagen Symposium on Functioning of Terrestrial Ecosystems at the Primary Production Level और 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.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCopenhagen Symposium on Functioning of Terrestrial Ecosystems at the Primary Production Level और 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.