This vintage softcover book/manual titled "More Subroutine Sandwich" was written by John P. Grillo and J.D. Robertson in 1983. Published by Wiley, this is a 1st edition, 1st printing of the book. The content is focused on computing and programming, providing valuable information for those interested in vintage computing.

The book is in good condition and has been well preserved over the years. It is a great addition to any vintage computing collection and provides valuable insights into the field. The book is shipped from the United States and is available for purchase on eBay in the "Computers/Tablets & Networking" and "Vintage Computing" categories.