Cracknell A P Magnetism in crystalline materials: Application of the theory of groups of combiant symmetry - 1 - Oxford Pergamon 1975 - vii,276p. cm. - International series of monographs in natural philosophy; 72 . Standard No.: 62413 Source: Textual Subjects--Topical Terms: Crystals Properties of matterPhysics Dewey Class. No.: C216, L5