TY - BOOK AU - Unterweiser,Paul M. AU - Penzenik,Marilyn TI - Worlwide guide to equivalent irons and steels T2 - ASM, engineering handbook SN - 0871700883 PY - 1979/// CY - Ohio PB - American Society for Metals KW - Aceros KW - lemb KW - Libro KW - unescot ER -