TY  - BOOK
AU  - Sonntag,August
AU  - Mueller,Ferdinand von
TI  - Observations on terrestrial magnetism in Mexico: Conducted under the direction of Baron von Müller, with notes and illustrations of an examination of the volcano Popocatepetl and its vicinity
T2  - Smithsonian contributions to knowledge. [vol. XI, art. 7]
AV  - Q11 .S68
PY  - 1860///]
CY  - [Washington
PB  - Smithsonian Institution
KW  - Geomagnetism
KW  - Mexico
KW  - Popocatépetl (Mexico)
ER  -