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Estimated Years 1940-1949Clear
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610 CHAPTER 35 1946 Guide ping after a definite interval of time.
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620 CHAPTER 35 1946 Guide Typical Specifications for Single Phase Motors . ..........................Hp,..........................
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670 CHAPTER 38 .1946 Guide Table 3.
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jJ 1 i i 7SO CHAPTER 42 1946 Guide --Sound Propagation in Ducts Lined with Absorbing Materials, by L.
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828 CHAPTER 45 1946 Guide penalties for excesses.
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62;.
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/ 152 CHAPTER 8______________ 1948 GuiJe Table 2.
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422 CUAPTER 23 1948 Guide Steam'Heating Systems and Piping 423 disc which closes to prevent the inflow of air to the system when the pres sure drops below atmospheric pressure.
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448;_______________________________ CHAPTER 23 f~ 1948 Guide ~ !
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Officers'and'List of Chapters,- 1947-4&^{Coticluded) , Oregon ' Headquarters, Portland.Ore. .
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18 CHAPTER 2 Graphical Symbols for Drawings 1949 Guide . < Ductwork 45.
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110 CHAPTERS :1949.Guide.
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566 CHAPTER 27 .1949 Guide tubing that has been deoxidized is used; This tubing is available, in a variety of sizes and wall thicknesses
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