TY - BOOK A1 - / organized by the Institution of Mining and Metallurgy in association with the Institution of Civil Engineers and the Institution of Mining Engineers, and held in Harrogate, England, from 5 to 7 June, 1989 TI - Shaft engineering : papers presented at the Shaft Engineering conference PB - كتابخانه مركزی دانشگاه بين المللی امام خمينی (ره) قزوين SN - 101494729 UR /book/101494729/Shaft-engineering-papers-presented-at-the-Shaft/ ER -