00282nam a2200121Ia 4500082002000000100001700020245003200037260003200069300001900101490003000120500000500150700000500155  a338.512bJ72.SC  aJohnston, J.  aStatistical cost analysisb  aNew YorkbMcGraw-Hillc1960  ax, 197p. Index  aEconomics handbook series  a  a