1. German, 1879.
Ueber krystallographische Zonen. Wissenschaftliche Abhandlung. Bautzen, Monse Druckerie, 1879.

4°: 14 p., 3 doule-sided plates. Published as: "Programm Gymnasium Bautzen, 1878-79, no. 444." A short description of zoning in crystals. Rare.

Bibliographical references: BMC: 3, 1462.