San Francisco : Architect and Engineer, Inc · leaf 270
al Electrie Co. 11. Sell, F. W., Ventilation—the Key to Self-Maintenance,Illuminating Engineering, September 1953, p. 500. 12. Blackwell, H. R., Use of Performance Data to SpecifyQuantity and Quality of Interior Illumination, Illumi-nating Engineering, June 1955, p. 286. FIG. 3 Note the… … i ?.»..■.-■t.-,-.^ -mfQTs. lUNE, 1956
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