00288nam a2200097 a 450000500170000008200210001710000190003824500700005726000420012730000210016920251203091609.0  a658.151,bD, gas  aGasking, Terry  aPerfect financial ratios: all you need to get it right first time  aLoNew DelhionbCentury Businessc1993  axii, 82p, 18 cm.