Unknown Author
Langdon, and Everest (Firm) Davis
AECOM
Carpenters' Company of the City and County of Philadelphia.
Davis Langdon
Practical house carpenters' society of the city and county of Philadelphia
University of Reading. Joint Centre for Land Development Studies
Dr. Ernest Fleishman, Director of Education
Weisheng Lu
United States. General Accounting Office
Mott, Green, and Wall (Firm)
M. P. Nicholson
[author not identified]
Sidney M. Levy