TY - BOOK AU - Roberts,Richard ED - National Symposium on Fracture Mechanics ED - ASTM Committee E-24 on Fracture Testing. TI - Fracture mechanics: proceedings of the Thirteenth National Symposium on Fracture Mechanics : a symposium PY - 1981/// CY - Philadelphia, Pa. (1916 Race St., Philadelphia 19103) PB - ASTM KW - Fracture mechanics KW - Congresses N1 - Includes bibliographical references and index ER -