Publicity methods for engineers; the proceedings of the first National conference on public information held under the auspices of the American association of engineers (1922)

National Conference on Public Information. 1st, Chicago, 1921, American Association of Engineers · Chicago, American Association of Engineers · leaf 175

An illustration from Publicity methods for engineers; the proceedings of the first National conference on public information held under the auspices of the American association of engineers, 1922, leaf 175 — ation of daylight to darkness throughout theyear and endeavored to show that one time is as good asanother for the measure of the 24 hours, but that the vitalthing is to arrange working hours so as to use daylight mosteconomically. The article was prompted by the feeling thatit was a duty to set…

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Publicity methods for engineers; the proceedings of the first National conference on public information held under the auspices of the American association of engineers (1922)

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