Unknown
American Association of Petroleum Geologists
In:
In: Stratigraphy Quo Vadis? : Papers from a 1982 IUGS Commission on Stratigraphy Symposium, Bad Honnef, West Germany. , ed. by Seibold, E. and Meulenkamp, J. D. AAPG Studies in Geology, 16. - IUGS Special Publication, 14 . American Association of Petroleum Geologists, Tulsa, Oklahoma, USA, pp. 1-2. ISBN 0-89181-022-6