Sustainable Wells —— Maintenance, Problem Prevention, and Rehabilitation

----- 可持续水源管理：维护、问题预防与复原

ISBN: 9780849375767 出版年：2009 页码：336 Smith, Stuart A Comeskey, Allen E CRC Press

No one has recorded when well digging started, but surely humans imitated elephants in digging holes in the sand to access cooler water that didn't make the children sick. Eventually, humankind began to redesign, maintain, and repair the wells they constructed, but when wells became "commodities" in the twentieth century, this maintenance ethic was