1.
Dive Computers: A Consumer's Guide to History, Theory and Performance
by Loyst, Ken, Huggins, Karl, ...
ISBN: 9780922769094
List Price: $12.95
2.
Night Diving : A Consumer's Guide to the Specialty of Night Diving
by Loyst, Ken, Von Maier, Robe...
ISBN: 9780922769339
List Price: $12.95