Магнетизм

Магнетизм

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A guide to the making of magnetic and meteorological observations, compiled for mountain officers, heads of magnetic observatories, Academician A. Kupfer

печатано в типографии Экспедиции заготовления государственных бумаг
Adolf Kupfer, Adolf Yakovlevich (1799-1865). A guide to making magnetic and meteorological observations, compiled for mountain officers, heads of magnetic observatories, Academician A. Kupfer. S. Petersburg: printed in the printing house of the Expedition of State Securities, 1841.