There has been data ("Neutrices and External Numbers: A Flexible Number System (Chapman & Hall/CRC Monographs and Research Notes in Mathematics) - ISBN-13 978-1-4987-7268-6") available for this ISBN from the data sources that books-by-isbn.com uses, but not on the latest request on Mon Sep 2 07:55:03 2019, so the data displayed here has been removed .