00390nam a22001337a 4500008004100000082001800041100002800059245005400087250000800141260004500149300001600194650001800210700002800228191016b           ||||| |||| 00| 0 eng d00a621.184bE487  aElonka, Stephen Michael10aStandard Boiler Operator's Questions and Answers/  a1st  aBombay:bTata McGraw Hill Company,c1989  axiii, 365p. 0aSteam Boilers  aKohan, Anthony Lawrence