Não informado. (1972). TECHNOLOGY REPORTS OF THE YAMAGUCHI UNIVERSITY. Yamaguchi University, Faculty of Engineering.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. TECHNOLOGY REPORTS OF THE YAMAGUCHI UNIVERSITY. Ube, Japan: Yamaguchi University, Faculty of Engineering, 1972.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. TECHNOLOGY REPORTS OF THE YAMAGUCHI UNIVERSITY. Yamaguchi University, Faculty of Engineering, 1972.
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