00365nam a2200145Ia 4500020001500000082002300015100002200038245004100060260002900101300001000130490004500140500002400185500000500209700000500214  a1597180009  a518.5425bSt797.SP  aStata Corporation  aStata programming reference manualb  aTexasbStata Pressc2005  a450p.  aStatistics, graphics and data management  a"Stata - Release 9"  a  a