00754nam a2200229Ia 4500003000400000005001700004006001800021007000300039008004100042037001700083040001800100041001300118082002200131110007400153245005500227260004600282300001700328490006100345500002900406650001500435700007400450OSt20220926022613.0a|||||r|||| 00| 0ta220923b        |||||||| |||| 00| 0 eng d  cGeneral Book  aRTLcRTLbeng  2engaeng  aX 9(D66).4.N7, L5  aUnited Nations. Economic and Social Commission for Asiand the Pacific 0aNational power grids and extra-high-voltage system  aNew YorkbUnited Nations USA       c1975  av, 80p.ccm.  aUnited Nations, Energy Resources Development series, 14.  aSales No >: E.75.11.F.13  aElectrical  aUnited Nations. Economic and Social Commission for Asiand the Pacific