00480nam a2200193Ia 4500003000400000005001700004008004100021020002200062040000700084041000800091082001600099100001800115245003800133260004200171300001500213365001300228650001400241650003100255OSt20230509095319.0210423s2012    xx            000 0 und d  a978-81-203-4609-3  cAL  aeng  a333.79 SAWN  aSAWHNEY (G S)  aNon-conventional energy resources  aNew DelhibPHI Learning Pvt Ltdc2012  axi,272bPB  b325cINR  aEconomics  aNatural Resources & Energy