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
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Langue Anglais ● Format PDF ● Pages 334 ● ISBN 9780849375774 ● Maison d’édition CRC Press ● Publié 2009 ● Téléchargeable 3 fois ● Devise EUR ● ID 4111161 ● Protection contre la copie Adobe DRM
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