Duggal, K N.
Elements of public health engineering / K N Duggal. - 3rd ed. - New Delhi S Chand & Comany, 1983. - xv, 412 p. ill. ; 23 cm.
Includes bibliographies.
Sanitary engineering.
628
Elements of public health engineering / K N Duggal. - 3rd ed. - New Delhi S Chand & Comany, 1983. - xv, 412 p. ill. ; 23 cm.
Includes bibliographies.
Sanitary engineering.
628