Ehlers, Victor Marcus, 4 0 1844-1959.

Municipal and rural sanitation / 6 6 [by] Victor M. Ehlers [and] Ernest W. Steel. - 6th ed. - - xiv, 663 p. : illus. 24 cm. - - - - - . - McGraw-Hill series in sanitary science and water resources engineering . - 0 . - . - 0 .



Includes bibliographies.



5

















5







2 = =







64018401

GB65-5434 2




2 --0------


6 --0-- 2 --------



0 2 --


--20------





Sanitation.;Sanitary engineering.;Public health.;Rural health. --------20--


--------20--


----2

RA425 / .E5 19652

614 / 2

/

WA670 / .E33m 1965