000 00479cam a22001097a 4500
008 180718b1957 xxu||||| |||| 00| 0 eng d
082 _aV538 Un3n
245 _aNew sources of energy and economic development: solar energy, wind energy, tidal energy, geothermic energy and thermal energy of the state
_cby Department of Economic and Social Affairs, U.S.A.
260 _aNew York
_bUnited Nations
_c1957
300 _a150+p.
700 _aU.S.A. Department of Economic and Social Affairs
999 _c424743
_d424743