• 

  OGND - results/titledata

  http://swb.bsz-bw.de/DB=2.104/SET=1/TTL=1/CMD?retrace=0&trm_old=&ACT=SRCHA&IKT=2999&SRT=RLV&TRM=116000392

  Keine Beschreibung vorhanden.

• 

  The Journal of the Royal Geographical Society of London - Google Books

  https://books.google.de/books?id=FekRAAAAYAAJ

  "List of geographical works and maps recently published" in vol. 6-11.

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