Gesteine und Minerale - Staedter, Tracy; Lettowsky, Alžbeta; Forsey, Chris; Grinaway, Ray; McAllister, David; McVicar, Stuart; Saunders, Michael; Stead, Kevin; Tarabay, Sharif; Trojer, Thomas; Beckett, Andrew; Tessloff, Sabine (Tessloffs Welt des Wissens)