Allen E. Comeskey & Stuart A. Smith 
Sustainable Wells [PDF ebook] 
Maintenance, Problem Prevention, and Rehabilitation

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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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Bahasa Inggeris ● Format PDF ● Halaman-halaman 334 ● ISBN 9780849375774 ● Penerbit CRC Press ● Diterbitkan 2009 ● Muat turun 3 kali ● Mata wang EUR ● ID 4111161 ● Salin perlindungan Adobe DRM
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