00305nam a2200109 a 450000500170000010000180001724500510003526000290008630000230011563000340013870000230017220251203090646.0  aDavis, Owen L  aStatistical methods in research and production  aNew DelhibLongmanc1986  a478 p.b22 cm.bPB  aResearch, Statistical methods  aGoldsmith, Peter L