https://nrc-digital-repository.canada.ca/eng/view/object/?id=8d748e27-af52-4392-83d3-1fe4234dce00
Galaxies- Nebulosity in Monoceros- Mount Wilson and Palomar Observatories 002 - NRC Digital...
Galaxies- Nebulosity in Monoceros- Mount Wilson and Palomar Observatories 002
mount wilsongalaxiesnebulositymonocerospalomar