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
Köp den här e-boken och få 1 till GRATIS!
Språk Engelska ● Formatera PDF ● Sidor 334 ● ISBN 9780849375774 ● Utgivare CRC Press ● Publicerad 2009 ● Nedladdningsbara 3 gånger ● Valuta EUR ● ID 4111161 ● Kopieringsskydd Adobe DRM
Kräver en DRM-kapabel e-läsare