Coal Tar Pitch Roofing Handbook - 1896 - Page 32
APPROXIMATELY, the square foot prices of the various roofs herein are as follows, but it must be borne in mind that the area to be covered at one operation, location of the work, time of year and labor conditions of the locality, all have their respective influence on the cost.
These approximate prices are exclusive of metal flashings. They cover only the work shown on diagrams which accompany the Specifications.
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