RT Journal Article SR Electronic(1) A1 Kragh, E. A1 R. Goulty, N.YR 1991 T1 Hole-to-surface seismic reflection surveys for opencast coal exploration JF , VO OP SP cp-42-00081 DO https://doi.org/10.3997/2214-4609.201410824 PB European Association of Geoscientists & Engineers, SN 2214-4609, AB , UL https://www.earthdoc.org/content/papers/10.3997/2214-4609.201410824