text Ottawa IDRC 1990 Ind viii, 55 p. ; 24 cm. viii, 55 p. ; 24 cm. Bibliography p. 55 YATES, R. SOLAR ENERGY WATER DESALTING BOTSWANA 551.464 551.464YATs 8893-554-7 INLIS000000000002490 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)