(2019). RECOMMENDED contract practice for underground construction. Society for Mining , Metallurgy & Exploration.
Čikaški stil citiranja (17. izdanje)RECOMMENDED Contract Practice for Underground Construction. Society for Mining , Metallurgy & Exploration, 2019.
MLA način citiranja (9. izdanje)RECOMMENDED Contract Practice for Underground Construction. Society for Mining , Metallurgy & Exploration, 2019.
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