Sang, David Energy. - WaltononThames, Surrey : Nelson, 1992. - 126 p. : il. ; 27,5 cm. - University of Bath Science 1619 . - University of Bath Science 1619 . Apéndices: p. 120-24 ISBN: 017448190X Subjects--Topical Terms: ENERGETICA Universal Decimal Class. No.: 620.9