Definitor of minerals

Gerd, A.The determinant of minerals: the guide to the definition of minerals without the help of chemical reactions and crystallographic calculations: for schools and excursions / comp.A. Gerd.- St. Petersburg: ed."Russian book trade", 1870. -[4], 96, VII s .. -Ex.: Without region..1. The people (collection).Electronic copy source: PBOriginal storage location: Penza GKM