TY - BOOK AU - Edwards,Emory TI - The practical steam engineer's guide: in the desing, construction and management of American stationary, portable and steam fire engines, steam pumps, boilers, injectors, governors, indicators, pistons and rings, safety valves and steam gauges AV - TJ275 E38 PY - 1990/// CY - Philadelphia PB - H.C. Baird ; London, Sampson low KW - Máquinas de vapor ER -