TY - BOOK AU - Indian Standards Institution TI - Requirements for Biological Treatments and Equipment: Part - 2 Activated Sludge Process and ITS Modifications (IS : 8413 (Part 2) - 1982) U1 - IS : 8413 (Part 2) - 1982 PY - 1982/// CY - New Delhi PB - Indian Standards Institution KW - Indian Standard - IT N1 - IS : 8413 (Part 2) - 1982 ER -