Code of practice for design and construction of septic tanks
Indian Standards Institution
Code of practice for design and construction of septic tanks - First rev - New Delhi 1971 - 2pts - IS:2470 2pts--1968-71 .
SEPTIC TANKS
SEPTIC TANKS
389.6 IS:2470
Code of practice for design and construction of septic tanks - First rev - New Delhi 1971 - 2pts - IS:2470 2pts--1968-71 .
SEPTIC TANKS
SEPTIC TANKS
389.6 IS:2470