Model No. 734 FA: U 21
Description: 45 crystal models made of cardboard of the company Dr. F. Krantz. Bonn. (Notation of Schoenfliess is used) Triclin, monoclin, rhombic, rhombohedral (trigonal) Trigonal, hexagonal, tetragonal, cubic
RE: Katalog v. Krantz. M., Ewald Handb. d. Physik Bd. XXIV, S. 204 u. 11. Niggli Geometrische Kristallographie S. 132/133 Category: 45 cristal models
RU: B II 49-93