00471nam a22001577a 4500 547 547 191016b ||||| |||| 00| 0 eng d 621.184 E487 59 Elonka, Stephen Michael Standard Boiler Operator's Questions and Answers/ 1st Bombay: Tata McGraw Hill Company, 1989 xiii, 365p. Steam Boilers 61 Kohan, Anthony Lawrence BK 0 0 ddc 0 621_184000000000000_E487 0 2535 CL CL 1973-11-09 21.00 621.184 E487 04017 2019-10-16 1 BK 0 0 ddc 0 621_184000000000000_E487 0 2536 CL CL 1973-11-09 21.00 621.184 E487 04018 2019-10-16 2 BK