• 

  Ökozonen Teil 1: VL-TWK TU-Berlin am Inst. für Ökologie

  http://lv-twk.oekosys.tu-berlin.de/project/lv-twk/04-intro-3-twk.htm

  Keine Beschreibung vorhanden.

• 

  Links for Mineralogists

  https://web.archive.org/web/20090129090602/http://mineralogie.uni-wuerzburg.de/links.html

  Annotated links to internet resources, especially for mineralogists, petrologists, crystallographers,geologists.

---

---