Analysis of information sources in references of the Wikipedia article "Steel" in English language version.
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{{cite book}}: ISBN / Date incompatibility (help){{cite book}}: ISBN / Date incompatibility (help){{cite book}}: |work= ignored (help){{cite book}}: |work= ignored (help){{cite news}}: CS1 maint: periodical has ISBN (link){{cite web}}: CS1 maint: deprecated archival service (link){{cite news}}: CS1 maint: periodical has ISBN (link)