Die elemente des erdmagnetismus und ihre saecularen aenderungen während des zeitraumes 1550 bis 1915.
By: von Dr. H. Fritsche ... Publication III.
Publisher: Typ. A. I͡Ak︡ovsona nauk
Published: 1900
Place of publication: St. Petersburg
Language: ger
Number of pages: 62
Subjects: Geomagnetism -- Secular variations.
Notes: Autographed, with printed t.p.