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Mechanical equipment of buildings; a reference book for engineers and architects (1916)
Harding, Louis Allen, Willard, Arthur C. (Arthur Cutts), 1878-1960 · New York Wiley · leaf 276
11/ /u FiG. 19. Friction Pressure Lo55 Cnor^ for Gravity Hot Woter Heoting Systems. 30000 20000 A;^- … ^-4=^^^ £3 MidcfleLine ofBoiler- 340000Building · Heating · Ventilation
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
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