Code of practice for installation of septic tanks  Part 2 secondary treatment and disposal of septic tank effluent/2 nd ed. 

 - 2nd rev. 
 - New Delhi  Indian standards institution  1985 
<br/><br/><label>Subjects--Index Terms: </label>IS:2470(part 2)-1985 
<br/><br/><label>Dewey Class. No.: </label>628.352:006.76