Die Darstellung von Prismen und Pyramiden im Schrägbild (Mathematik 7. Klasse) : Schulze, Claudia: Amazon.com.au: Books
Schrägbilder zeichnen Anleitung Pyramide by Mathematik Nachhilfe
Precious stones, a popular account of their characters, occurrence and applications, with an introduction to their determination, for mineralogists, lapidaries, jewellers, etc. With an appendix on pearls and coral. Precious stones;