Beck, B. F., Stephenson, J. B., Herring, J. G., & Beck, B. F. (1997). The engineering geology and hydrogeology of karst terranes: Proceedings of the Sixth Multidisciplinary Conference on Sinkholes and the Engineering and Environmental Impacts of Karst, Springfield, Missouri, 6-9 April, 1997. Rotterdam, Netherlands ; Brookfield, Vt.: A.A. Balkema.
Παραπομπή Chicago StyleBeck, Barry F., J. Brad Stephenson, J. Gayle Herring, and Barry F. Beck. The Engineering Geology and Hydrogeology of Karst Terranes: Proceedings of the Sixth Multidisciplinary Conference On Sinkholes and the Engineering and Environmental Impacts of Karst, Springfield, Missouri, 6-9 April, 1997. Rotterdam, Netherlands ; Brookfield, Vt.: A.A. Balkema, 1997.
Παραπομπή MLABeck, Barry F., J. Brad Stephenson, J. Gayle Herring, and Barry F. Beck. The Engineering Geology and Hydrogeology of Karst Terranes: Proceedings of the Sixth Multidisciplinary Conference On Sinkholes and the Engineering and Environmental Impacts of Karst, Springfield, Missouri, 6-9 April, 1997. Rotterdam, Netherlands ; Brookfield, Vt.: A.A. Balkema, 1997.