National Conference on Clays and Clays Minerals (7th : 1958, Oct 20-23 : Washington D.C) (Meeting Name)

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Preferred form: National Conference on Clays and Clays Minerals (7th : 1958, Oct 20-23 : Washington D.C)

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Work cat.: ()743743: National Conference on Clays and Clays Minerals (7th : 1958, Oct 20-23 : Washington D.C), Clays and Clays Minerals :, 1960