An excellent self-teaching guide for use in home or office. It is easily read and logically structured by a teacher who knows teaching, and his subject well. This book gives broad coverage to the subject, and blends theory and practice well to avoid confusion. The author claims that eight hours with this book will give you a solid working knowledge of celestial navigation. Uses HO-229 exclusively. SC, 1988, 206 Pages. 1.5 lbs