Sewage and waste water treatment
628.30954
M689S
Modak, N V
 Sewage and waste water treatment \ N V Modak - Bombay : Somaiya, 1971.
 xii, 534p.
114452
  Subjects: Sewage-Purification-India; Factory and trade waste-India; Sewage sladge-India; Sewage disposal-India.

