Walking in Arolla and Zinal. The Val d'Herens and Val d'Annivers in the Swiss ValaisLesley WilliamsUitverkocht4,3Volgen
Thermometrical Navigation: Being a Series of Experiments and Observations Tending to Prove That by Ascertaining the Relative Heat of the Sea-WateJonathan WilliamsUitverkocht4,3Volgen
