اذا لم تجد ما تبحث عنه يمكنك استخدام كلمات أكثر دقة.
Author: Bishop, Philip W.
Title: The Beginnings of Cheap Steel
Language: English
LoC Class: Q: Science
LoC Class: TN: Technology: Mining engineering, Metallurgy
Subject: Bessemer process
Subject: Steel
Release Date: Aug 8, 2009
Copyright Status: Public domain in the USA.
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