00286nam a2200121Ia 4500008004100000041000800041082001800049100001500067245002900082260002300111365001500134700001500149230718s9999    xx            000 0 und d  aeng  a621.31'7bGUP  aGupta J.B.  aElectrical Power Plants.  c1992bKataria S.K.  cRs.b50.00  aGupta J.B.