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O-39	Okoe, Emmanuel     Preproduction Engineering of the inner flap spar of An-72 type airplane and manufacturing of the part by machining [Текст] : Explanatory Note of Thesis for Bachelor's Degree: 6.051101 - Aircraft and Rocket Construction and Design / Ministry of Education and Science of Ukraine, Nat. Aerospace Univ. named after N. Ye. Zhukovskiy "KhAI", Aircraft Engineering Faculty, Department of Aircraft Manufacturing Technologies (№ 104) ; Supervisor: Plankovsky S. I. — Kharkiv, 2016. — 57 p. + app.