Clays and Clay Minerals. Proceedings of the Fourth National Conference on Clays and Clay Minerals. The Pennsylvania State University, October 10–13, 1955. Herausgeg. von A. Swineford. National Academy of Sciences-National Research Council, Washington 1956. 1. Aufl., VII, 444 S., viele Abb., geb. $ 6. —


  • H. Salmang

No abstract is available for this article.