Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 450
FiG. 1030. … Fig. 1034. Fig. 1035. mit the construction of the masonry in the open air. To preserve the positionof the air-lock during the whole construction there is an offset in the pipe at29 434 ENGINEERING DRAWING. Q
Mechanical drawing
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