Sunspot Observations of Rudolf Wolf from 1849 – 1893
Crossref DOI link: https://doi.org/10.1007/s11207-016-0907-0
Published Online: 2016-06-06
Published Print: 2016-11
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Friedli, Thomas K.
License valid from 2016-06-06