Directorium magneticum
Subtitle: magneticis quibusdam phoenomenis exhibendis, experimentis dirigendis, ac observationibus definiendis
By: aptatum a P. Joan. Nepomuce. Reichenberger, philosophiae et matheseos professore ... Lycei episcopalis ad S. Paulum Ratisbonae
Publisher: J.N. Reichenberger
Published: 1776
Place of publication: Ratisbon
Language: lat
Subjects: Dip needles; Early works to 1800; Magnetism
Notes: Signature: [-]⁴.

Ill. signed: J.G. Fridrich sculp., Rat. 1776.