Clapp, William Howard Engineering materials and processes: metals and plastics/ William Howard Clapp and Donald Sherman Clark - 2nd ed. - Pennsylvania: International text book company, c1949 - xii, 526 p.: ill.; 23 cm. Includes index ISBN: $ 7.50 Subjects--Topical Terms: MaterialsEngineering designMetallurgyManufacturing processes Dewey Class. No.: 620.1