1. Temperature of coal mines producing acid water;Ahmad,1971
2. Ground temperature and thermal infrared surveys of coal mines producing acid water;Ahmad,1971
3. Temperature survey of coal mines producing acid water;Bobba,1971
4. LANDSAT-1 identification of groundwater regimes in a Great Lakes Basin;Bobba,1976
5. Application of LANDSAT data to the location of hydrologically active source areas;Bobba,1979