First written in 1949, this is the 1998 edition, pocket book sized. ISBN# is listed in book as 0-8824-142-7, according to sticker on the back cover, it's 0-88246-142-7
First published 1949, this edition 1988. Book lists ISBN # as 0-8824-142-7, but sticker put on back cover by bookstore states 0-88246-142-7. This is a technical manual.
