Gas Engine Construction, by Henry V.A. Parsell JR. & Arthur J. Weed. 102 Pages. Softbound. Gas Engine Construction is a practical treatise describing the theory and principles of the action of gas engines of varied types. Including clear illustrations of the actual work in progress and dimensioned working drawings that clearly give the sizes of the various details, this comprehensive study gives a broad and thorough knowledge of the principles of various forms of gas engines, and a full and concise description of the making of a regular gas engine by practical shop methods. There are a lot of good books out there on the gas engine, but no really practical work telling how to make a good machine and to make it well, until now. The student, the scientific investigator, mechanic are going to love this one, as well as anyone with an interest in technology. $14.95 (BK-0731)