SIREGAR, Sakti A text yoi Jakarta Kanisius 2005 ind 112 hlm. ; 21 cm Sakti A. Siregar Bibliografi : hlm 112 PENGOLAHAN AIR LIMBAH 628.16 628.16 Sir i 979-21-0840-8 141002 20151116095231.0 INLIS000000000003651 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)