DescriptionModell eines Kristalls des Feldspats Periklin -Krantz 18-.jpg English: Object in the model collection of the working group crystallography...
DescriptionModell eines Kristalls des Feldspats Periklin -Krantz 18- (3).jpg English: Object in the model collection of the working group crystallography...
DescriptionModell eines Kristalls des Feldspats Periklin -Krantz 18- (2).jpg English: Object in the model collection of the working group crystallography...