"Celestial Navigation for Yachtsmen

"Celestial Navigation for Yachtsmen" was first published in the USA over 27 years ago.  Through those years it has been the best-known, best-loved primer on the subject throughout the English speaking world.  This book has spawned many imitators over the years, but it's still the best. 

Paperback.  69 pages.  Numerous black & white illustrations throughout.