Angel, Julie C.
Comparison of a new GIS based technique and a manual method for determining sinkhole density : An example from Illinois'sinkhole plain
Journal of cave and karst studies, vol. 66, no. 1 (2004) 9-17
Comparison of a new GIS based technique and a manual method for determining sinkhole density : An example from Illinois'sinkhole plain
Journal of cave and karst studies, vol. 66, no. 1 (2004) 9-17