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This item is a small 64-page booklet titled "The HP-19B Pocket Guide: Just in Case" published by Grapevine Publications, Inc. This booklet is the First Printing from November of 1988.
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.