Home | << 1 >> |
Author | Title | Year | Publication | Volume | Pages |
---|---|---|---|---|---|
Ubierna, J.A.J. | Tunnel heritage in Spain: Roots of the underground | 1998 | Tunnelling and Underground Space Technology | 13 | 131-141 |
United Nations | Stampriet Transboundary Aquifer System Assessment: governance of Groundwater resources in Transboundary Aquifers (GGRETA), phase 1: technical report | 1998 |