Minerals (Jiří Kouřimský)
This set contains e-books:
Minerals - Jiri Kourimsky. Nerosty II - Slovensko. Wiew on minerals in Slovakia, their finding places and physical quality, like hardness, collour and chemistry. List of Slovak mineralogy literatur. Many lists. 131 collour pictures. Czech language. Adobe PDF - 222 pages - 24,4 MB.
Edelsteine - Eduard Gübelin. Precious stone. List of most popular gemstones using in jewelery. Their chemical and phyzical quality, survey of finding places. Most popular applications those stones and another interesting informations about them. 18 collour pictures. German language. Adobe PDF - 46 pages - 800 KB.

