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 239
, the latter com-bination having come recently into considerable favor. Alum, or potash alum, and iron alum,which in reality contains no alumina and should rather be called potassia-ferric, are the coagu-lants generally used in connection with filtration. Such matter as is not removed by…
Building · Heating · Ventilation
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
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