text jakarta PT Gunung Agung 1981 Cetakan : 1 ind x, 322 hlm. ;24 cm. Keselamatan Kerja 331.2 20130515222107 INLIS000000000010456 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)