Der Kosmos Mineralienführer: 700 Mineralien, Edelsteine und Gesteine : Hochleitner, Rupert: Amazon.de: Bücher
Amazon.com: Thames & Kosmos: Crystals & Materials
Amazon.com: Thames & Kosmos: Crystals & Materials
Amazon.com: Thames & Kosmos I Dig It! Rocks - Real Minerals Excavation Kit | Science Kit | Dig Up Real Mineral Specimens | Learn About Mineralogy & Geology | 2018 Oppenheim Toy