["Earth Sciences \/ General","Earth Sciences \/ Hydrology","HISTORY \/ General","HISTORY \/ World","NATURE \/ Environmental Conservation & Protection","100305 Bloomsbury US Adult PB","Earth Sciences","Earth Sciences \/ General","Earth Sciences \/ Hydrology","Ecology","Environmental Conservation & Protection","General","General Adult","HISTORY","HISTORY \/ General","HISTORY \/ World","Hydrology","NATURE","NATURE \/ Environmental Conservation & Protection","Nature\/Ecology","Non-Fiction","SOCIAL HISTORY","WATER SUPPLY AND TREATMENT","Water.","Water;History.","Water;Social aspects;History.","World"]