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Start Over You searched for: Publish Year Decade 1970 - 1979 Remove constraint Publish Year Decade: 1970 - 1979 Sudoc Stem I 28.37/a Remove constraint Sudoc Stem: I 28.37/a

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221. Bauxite; [by Horace F. Kurtz].

222. Beryllium; [by Robert A. Whitman].

223. Boron; [by A. F. Grube].

224. Bromine; [by Robert T. MacMillan].

225. Cadmium; [by Burton E. Ashley].

228. Cobalt; [by John D. Corrick].