A Collector's Guide to Minerals, Rocks and Gemstones in Cornwall and Devon

R. A. H.

Mineralogical Magazine; December 1969 v. 37; no. 288; p. 529; DOI: 10.1180/minmag.1969.037.288.22
© 1969, The Mineralogical Society
Mineralogical Society (www.minersoc.org)