Epistola invitatoria ad observationes magneticæ variationis communi studio junctisq[ue] laboribus instituendas
By: Curioso & erudito lectori Joh. Christophorus Sturmius, ..
Publisher: [s.n.]
Published: 1682
Place of publication: Altorfi[i] Noricorum
Language: lat
Subjects: Compass; Geomagnetism
Notes: Caption title.

Place and date of publication given at end of text (p. [8])

Signatures: ):(⁴

On true north and magnetic north and their importance to navigation.

Acta eruditorum Anno 1682 (no.8): 258-260. August 1682.