books.google.com.au - Professor Ziman's classic textbook on the theory of solids was first pulished in 1964. This paperback edition is a reprint of the second edition, which was substantially revised and enlarged in 1972. The value and popularity of this textbook is well attested by reviewers' opinions and by the existence...http://books.google.com.au/books/about/Principles_of_the_Theory_of_Solids.html?id=o4woMNO-C3sC&q=modes&utm_source=gb-gplus-sharePrinciples of the Theory of Solids