Reference clay localities--United States
By: by Paul F. Kerr and J.L. Kulp.
Contributors: Kulp, J. Laurence 1921-; American Petroleum Institute.
Publisher: Columbia University
Published: 1949
Place of publication: New York
Language: eng
Number of pages: 101
Subjects: Clay -- United States.
Notes: Includes bibliographical references.
At head of title: American Petroleum Institute project 49.  Clay mineral standards.  Preliminary report no. 2.
"February, 1949"