The first edition of Bats Of The World has no letter code on page 160. © 1994 Gary L. Graham. Illustrations © 1994 by Fiona A. Reid. Later editions have a $5.95 price on the back cover. The full ISBN number on the back cover is 0-307-24080-0. Listed as a Golden Guide on the cover and the inside front cover.
This title also exists in a large (5 ¼ by 7 ¾ inch) hardcover. The number on the back cover is 0-307-64080-9.
No cover variant or revised Golden Press edition exists that I am aware of. Still in print by St. Martin's Press.