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Start Over You searched for: Publish Year Decade 1960 - 1969 Remove constraint Publish Year Decade: 1960 - 1969 Sudoc Stem I 28.37/a Remove constraint Sudoc Stem: I 28.37/a

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301. Mica; by Benjamin Petkof.

303. Molybdenum; by R. W. Holliday.

304. Natural gas liquids; by I. F. Avery.

305. Natural gas; by Ivan F. Avery.

306. Nickel; by Glen C. Ware.

307. Nitrogen; by Richard W. Lewis.

308. Peat; by Eugene T. Sheridan.

309. Perlite; by Timothy C. May.

310. Phosphate rock; by Richard W. Lewis.