Woolfson, M. M. Direct methods on crystallography / by M. M. Woolfson - Oxford : Clarendon Press, 1961 - 144 p. : ill. ; 23 cm. - Monographs on the physics and chemistry of materials . Includes bibliographical references and index Subjects--Topical Terms: Crystallography, MathematicalFluorene Dewey Class. No.: 548.7