Alternative energy sources : a strategy planning guide text An Aspen Publication 1981 N ix, 252 hlm. 24 cm TENAGA (MEKANIKA) 621.042 621.042 She a INLIS000000000000400 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)