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3
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The international trusteeship system and the Trusteeship council
- United Nations,
- 1949.
- New York :
-
Encyclopedia of Chemical Technology / Raymond E. Krik Donald F. Othmer.
- The Interscience Encyclopedia,
- 1949.
- New York :
-
Encyclopedia of chemical technology : Carbon (contd.) to Cinchophen / Raymond E Kirk & Donald Frderick Othmer.
- The Interscience Encyclopedia cop.,
- 1949.
- New York :