UNESCO text Paris UNESCO 1967 Ind 35 p. ; 20 cm. 35 p. ; 20 cm. Bibl.: p. 34-35 UNESCO RESERVOIRS 627.8 627.8UNEr INLIS000000000008182 Converted from MARCXML to MODS version 3.5 using MARC21slim2MODS3-5.xsl (Revision 1.106 2014/12/19)