Report of the committee on A treaties on marine ecology and paleoecology 1949-1950.

Report of the committee on A treaties on marine ecology and paleoecology 1949-1950.

出版社：1952.

出版年：1952

作者：Ladd,H.S.

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Report of the United Nations Economic Mission to Chile, 1949-1950.

作者：United Nations Technical Assistance Administration.
出版社：N. Y. : United Nations Technical Assistance Administration, 1951.
出版年：1951

Review of economic conditions in Aferica : supplement to World economic report, 1949-1950.

作者：United Nations.
出版社：N.Y. : [United National. Department of Economic and Social Affairs], 1951.
出版年：1951

Treatise on marine ecology and paleoecology

出版社：New York : Geological Society of America, 1957.,N.Y. : Geological Soc. of America, [n.d.]
出版年：1957

Statistical abstract of Israel 1949-1950.

作者：Israel.
出版社：Jeruselem : Govt. Print., [1949?]
出版年：1949

Treatise on marine ecology and paleoecology.

作者：Hedgpeth,Joel W.
出版社：[New York] 1957.
出版年：1957

Report of the Committee on Marine Ecology as Related to Paleontology. 1945-1946.

作者：Ladd,Harry S.
出版社：Washington, D.C. : National Research Council, Division of Geology and Geography, 1946
出版年：1946