Collecting Rocks, Gems And Minerals : Identification, Values, Lapidary Uses / Patti Polk - 3rd.edition - Iola, WI Krause Publications 2016 - 352 p. col. ill., photo 22 cm
Includes bibliographical references (p. 339 ) , index ( p.349 - 352 ), photo credits ( p.340 - 348 )
9781440246159
--Identification--Collection And Preservation--Rocks
--Identification--Collectors And Collecting--Gems
552.075 POL