00281nam a22001217a 4500082000800000100002500008245004500033250001100078260003800089300000800127942000700135999001700142  aANA  aAnanthanarayanan P N  aBasic refrigeration and airconditioning   a3rd ed  aNew DelhibTata McGraw Hillc2005  a702  cBK  c54930d54927