PURCHASE OROER Certain-teed Products Corporation* UO LAST LANCASTM AVINUI ARDMORE, PENNSYLVANIA PLANT PURCHASING COPY ACCOUNT CODE jr.

American Society of Heating and Ventilating Engineers Guide, 1930 Table 36.

American Society of Heating and Ventilating Engineers Guide, 1930 Table 4.

American Society of Heating and Ventilating Engineers Guide, 1930 what paints are placed on the heater as a priming coat; the result's are always dependent upon the last coat of paint.

American Society of Heating and Ventilating Engineers Guide, 1930 boiler.

American Society of Heating and Ventilating Engineers Guide, 1930 In order to determine heat losses per linear foot of pipe from.known losses per square foot, it is necessary to know the number of square feet area per linear foot of pipe.

American Society of Heating and Ventilating Engineers Guide, 1931 Table 3.

698 899 American Society of Heating and Ventilating Engineers Guide, 1931 t-- *0 CS 5 +i ,k s SH 311 lg PO a a g c h0.

American-Society of Heating and Ventilating Engineers Guide, 1932 c Table 10.

American Society of Heating and Ventilating ' Engineers Guide, 1932 Table 1.

American Society of Heating and Ventilating Engineers Guide, 1932 Fig. 13.

of andAmerican Society Heating Ventilating Engineers Guide, 1932 Langdon, J.

American Society of Heating and Ventilating Engineers Guide, 1934 2.

American Society of Heating and Ventilating Engineers Guide, 1934 Chapter 32--Steam System Piping To blast trap Fig. 28.

American Society of Heating and Ventilating Engineers Guide, 1934 1. ' By warming the interior surfaces of the building.