International Symposium On Underground Engineering : Volume 2 / by B. Singh ; sponsored and organised by Central Mining Research Station - Rotterdam : A. A. Balkema , 1989 - 94 p.: graph, ill.; 28 cm
International Symposium on Underground Engineering, 14-17 April, 1988, New Delhi, India
Includes bibliographical references and indexs
9061919282 RM 221.97 (set)
--Underground Areas--Congresses--Underground Construction
624.19 SIN