| General info : | | Bloomsbury Group was the brand name of a graphic design group, likely named after the literary group of the same name. | |
| Contact info | | | |
| Websites | | Discogs (www.discogs.com/artist/1353976-Bloomsbury-Group) | |
| Source : | | (www.rollingstone.com/music/music-features/black-sabbath-cover-art-keef-keith-macmillan-interview-951578/) | |
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