| Reed, Juliet C. (1976), Annotated Biblio. of Minerals New to the PA List 1965-1974, The Min. Soc. of PA, Inc.: 19 & 24-25 Smith, Robert C., II (Dec 1970), "Tscheffkinite, a Min. New to PA," in Montgomery, A., "PA Mins. (PM) (96), Keystone Newsletter Lap |
Lehigh University Campus, Bethlehem, Northampton County, Pennsylvania, USA