ASHRAE: American Society of Heating Refrigerating and Air-Conditioning Engineers
Dana, Richard T., and W. L. Saunders
Traylor Engineering & Manufacturing Co.
Rodchenko, Alexander; Varvara. Stepanova, and Aurora Garcia
Maryland Geological Survey
Maryland Geological Survey
Abbott, Henry G. [Hazlitt]
Moscatelli, V. B., editor in chief
Francis Darwin, edited by
Levy, Leonard A., and Herbert G. Willis
Kittochtinny Historical Society
Foulk, Paul L.; edited by Percy S. Eichelberger
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