Category:Discoveries_by_Joseph_Helffrich
Category:Discoveries by Joseph Helffrich
This is a category for astronomical objects discovered by German astronomer Joseph Helffrich.
See parent category for proper sortkey usage instructions.
This is a category for astronomical objects discovered by German astronomer Joseph Helffrich.
See parent category for proper sortkey usage instructions.
This article uses material from the Wikipedia article Category:Discoveries_by_Joseph_Helffrich, and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.