00338nam a2200121Ia 4500008004100000020001800041100001800059245003100077250001900108260004200127300001700169650003000186240817s9999    xx            000 0 und d  a9780000000000  aTwidell, John 0aRenewable energy resources  a621.042 Tw92,r  c2013a HYDERABADb B. S. PUBLICATIONS  axvi,601p. p.  a Renewable energy soruces