Variazioni della declinazione magnetica.

Description

Viewability

Item Link Original Source
Full view   1890 University of Michigan
Full view   1891 University of Michigan
Full view   1892 University of Michigan
Full view   1893 University of Michigan
Full view   1894-1897 University of Michigan
Full view   1898 University of Michigan
Full view   1899 University of Michigan
Full view   1900 University of Michigan