Tschermaks mineralogische und petrographische MitteilungenDecember 1973, Volume 20, Issue 4, pp 333–336 | Cite asBuchbesprechungenAuthorsAuthors and affiliationsJ. ZemannH. WiesenederK. BechererArticle 14 Downloads This is a preview of subscription content, log in to check access.PreviewUnable to display preview. Download preview PDF.Unable to display preview. Download preview PDF.Copyright information© Springer-Verlag 1973Authors and AffiliationsJ. Zemann1H. Wieseneder1K. Becherer11.Wien