publisher: Bonanza Books; Crown Publishers publish date: November 16th 1988
format: hardcover pages: 256
language: English
ISBN:
0517166089 (9780517166086)
publisher: Crescent publish date: December 12th 1988
format: hardcover
language: English
ISBN:
051718964X (9780517189641)
publisher: American Malacologists, Inc. publish date: October 1st 1993
format: paperback pages: 256
language: English
ISBN:
0915826267 (9780915826261)