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শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিAmerican Society of Civil Engineers. Pipeline Division. Specialty Conference, Inc ebrary, Alan Atalah, এবং Armand Tremblay. Pipelines 2006: Service to the Owner : Proceedings of the Pipeline Division Specialty Conference, July 30 to August 2, 2006, Chicago, Illinois. Reston, VA: American Society of Civil Engineers, 2006.
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