We highly recommend this text which has been used extensively in classroom instruction. It has many clear helpful diagrams and an abundance of practice problems. Correct answers which are supplied for checking the practice problems, combined with the many sample problems make this book a good choice for self-instrucion by the diligent student. The reader should obtain HO-229, Vol 3, in order to do all the problems. SC, 1987, 261 pages. SW 1.6 lbs