00894nam0-22003131i-450-99000750014040332120090617140125.0000750014FED01000750014(Aleph)000750014FED0100075001420030814d1952----km-y0itay50------baengGBEnergy sourcesthe wealth of the worldEugene Ayres, Charles A. ScarlottNew York ; Toronto ; LondonMcGraw-Hill Book Company1952344 p.ill.24 cmFonti energeticheAyres,Eugene271084Scarlott,Charles A.ITUNINARICAUNIMARCBK990007500140403321C-03-161Ist.5249ILFGEQ2-Q4.3403362DECTSILFGEDECTSEnergy sources676348UNINA