Название: Rock and Gem Год / месяц: September 2020 Номер: Vol.50 No.09 Формат: True PDF Размер: 19.6 Mb Язык: English
Since 1971, Rock & Gem has been the leading magazine for lapidary and mineral hobbyists. Not a trade journal or a scientific dissertation, it speaks to the average rockhound, providing the right blend of entertainment and information. Armchair hobbyists and diehard diggers will find something to enjoy in each issue.