books.google.com - Historically, water has been treated as an inexhaustible resource. However, with the growth of population and development of industry and agriculture, freshwater demand has increased drastically, and its shortage felt in roughly 60% of the Earth. As early as 1931, renowned Russian scholar A.P. Karpansky...http://books.google.com/books/about/Groundwater_and_the_Environment.html?id=V1g5SWyevXUC&utm_source=gb-gplus-shareGroundwater and the Environment
