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The product is a vintage 1979 CP/M 68 operating system book by Jack Hemingway and Robert Grappel. This book likely contains valuable information and insights into the operating system, providing a fascinating look into the history and development of early computer systems. Perfect for vintage computing enthusiasts and collectors, this vintage manual offers a unique glimpse into the world of computing in the late 1970s.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.