Sheppard, Richard A.

Clinoptilolite of Possible Economic Value in Sedimentary Deposits of the Conterminous United States / By Richard A. Sheppard. -- Washington : United States Government Printing Office, 1971 - 15 p. -- (Geological Survey Bulletin ; 1332-B).

Fecha real de registro 9-8-1971


Clinoptilolite
Estado Unidos de América
Zenolita

553(73)
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