548.8 Bue X Buerger, Martin Julian, 1903- X-ray crystallography; an introduction t the investigation of crystals by their difra tion of monochromatic X- radiation« New York, J. Wiley k sons, inc.; London, Chapman Ball, limited, 1942. xacii, 531 P* incl» ilufl, tables, diagr- (part double) 23 cm.