00432cam a22001814a 4500003001000000005001700010008004100027040002500068041000800093044000800101080001100109100001800120245001600138260004200154650001700196655001900213700001800232AR-SsjUIB20250710155206.0250429s1947    xxu           000 0 eng d  aAR-SsjUIBcAR-SsjUIB0 aeng  axxu  a621.651 aSporn, Philip10aHeat pumps.  aNew York :bJ. Wiley and Sans,c1947. 7aBombas2lemb 7aLibro2unescot1 aAmbrose, E.R.