San Francisco, Calif. : Architect and Engineer Co · leaf 77
%■% ■• 3»# *-!. *l H … 1^1 a£ MH ««• NATIONAL BLOWER WORKS Factory Heating Systems It would be impossible to give a general illustration of the usual hot blastsystem as applied to factory heating as each and every building has differentrequirements based on the mode of construction and uses to which it is put.However,…
Architecture · Building
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