Porges, J. (1976). Handbook of heating, ventilating and air conditioning. Newnes - butterworths.
शिकागो स्टाइल उद्धरणPorges, John. Handbook of Heating, Ventilating and Air Conditioning. London: Newnes - butterworths, 1976.
एमएलए उद्धरणPorges, John. Handbook of Heating, Ventilating and Air Conditioning. Newnes - butterworths, 1976.
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