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)
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)