Tohutoro APA (7th ed.)
Duggal, S. (2017). Limit state design of steel structures (2nd ed.). McGraw Hill Education(I) Pvt Ltd.
Tohutoru Kātū Chicago (17th ed.)
Duggal, S.K. Limit State Design of Steel Structures. 2nd ed. Chennai: McGraw Hill Education(I) Pvt Ltd, 2017.
Tohutoro MLA (9th ed.)
Duggal, S.K. Limit State Design of Steel Structures. 2nd ed. McGraw Hill Education(I) Pvt Ltd, 2017.
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