TY - BOOK ED - ASTM TI - 1980 Annual Book of ASTM Standards. Part 5 : : Steel-Bars, Forging, Bearing, Chian, Springs PY - 1980/// CY - Philadelphia : PB - ASTM, KW - ACEROS KW - FORJADO KW - CADENAS KW - RESORTES KW - NORMAS ASTM ER -