ELONKA, S. M. (1985). Standar boiler room: Questions and answers. Tata McGraw-Hill.
Dyfyniad Arddull ChicagoELONKA, Stephen M. Standar Boiler Room: Questions and Answers. New Delhi: Tata McGraw-Hill, 1985.
Dyfyniad MLAELONKA, Stephen M. Standar Boiler Room: Questions and Answers. Tata McGraw-Hill, 1985.
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