نمایش ۲ نسخه ی کتاب « Sterss relieving heat treatment of welded steel construction: Proceedings of the international conference held in sofia, Bulgaria, 6-7 July 1987 under the auspices of the international institute of weldeing - Les traitment thermique se relation des constructions soudees en acir : Communication presentees a la conference internationa-la tenue a sofia bulgaria, les 6-7 Juillet 1987 sous les auspices de l'institute international de la soudur » در 2 کتابخانه.