<P><B></B> Intended to acquaint the reader with the theory of x-ray diffraction, the experimental methods involved, and the main applications. The book is a collection of principles and methods stressing X-ray diffraction rather than metallurgy. <B></B> The book is written entirely in terms of the Bragg law and can be read without any knowledge of the reciprocal lattice. It is divided into three main parts—Fundamentals; experimental methods; and applications. <B></B> Designed for beginners, not as a reference tool for the advanced reader. </P>