Typus hydrophylacii intra Alpes Rhaeticas; quod fundit totius Europae celeberrima flumina; uti patet.
Kircher, Athasius,1602-1680.
[Amsterdam : J. Janssen,
1678]
In: Mundus Subterraneus. By Athanasius Kircher. Vol 1. p. 70.
Mundus subterraneus