In Trans-KARST 2004, Proceedings of the International Transdisciplinary Conference on Development and Conservation of Karst Regions, Hanoi, Vietnam, 13–18 September 2004; Batelaan, O., Dusar, M., Masschelein, J., Vu, T.T., Tran, T.V., Nguyen, X.K., Eds.; Research Institute of ...