: Projects on sites like the Internet Archive often host these split 7z files to preserve complete runs of rare magazines that are otherwise out of print.
"Radio Mirror Ani" (often abbreviated as ) was a niche but influential publication that bridged the gap between hobbyist radio enthusiasts and the growing anime fandom in late 20th-century Japan. These archives are highly valued by digital archivists for several reasons: RMA.7z.004
I can help you look for specific indices or contents if you're having trouble extracting the file. : Projects on sites like the Internet Archive