Transactions of the American Society of Civil Engineers, vol. LXXII, June, 1911 :
Hardy, E. D.
Transactions of the American Society of Civil Engineers, vol. LXXII, June, 1911 : Water Purification Plant, Washington, D. C. Results of Operation. [electronic resource] / E. D. Hardy - Project Gutenberg, 2008 - Project Gutenberg 27632 .
Public domain in the USA.
Electronic text
Water treatment plants Civil engineering -- Periodicals
TA
Transactions of the American Society of Civil Engineers, vol. LXXII, June, 1911 : Water Purification Plant, Washington, D. C. Results of Operation. [electronic resource] / E. D. Hardy - Project Gutenberg, 2008 - Project Gutenberg 27632 .
Public domain in the USA.
Electronic text
Water treatment plants Civil engineering -- Periodicals
TA