International Symposium on Underground Engineering: 14-17 April, 1988, New Delhi, India : proceedings / Central Mining Research Station - New Delhi: Oxford & IBH Publishing Co. Pvt. Ltd., 1988 - 530p. ISBN: 9788120403024 Subjects--Topical Terms: Science Subjects--Index Terms: Engineering Universal Decimal Class. No.: 624.19.035(082.2) / M8.1