Code of practice for design and constructionj of septic tanks  Part 1 small installations/1st rev. 

 - 1st rev. 
 - New Delhi  Indian standards institution  1969 
<br/><br/><label>Subjects--Index Terms: </label>IS:2470(Part 1)-1968 
<br/><br/><label>Dewey Class. No.: </label>628.352.001.3