00615nam a2200181Ia 4500003000900000008004100009040001600050080002900066110003300095245013900128260005000267300000900317500002800326650001900354650002100373650001800394650002100412IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a083.7:628.352.001.3bISI  aIndian Standards Institution 0aIndian standard code of practice for design and construction of septic tanksbpt. 1, small installationscIndian Standards Institution  aNew DelhibIndian Standards Institutionc1969  a24p.  aIS 2470 : Part 1 : 1968  a Septic Tanks  a Sewage Works   a Standards   aNASA Thesaurus