00698nam a2200217   45000010008000000030004000080050017000120080041000290100017000700400018000870500021001050820016001261000040001422450060001822500015002422600032002573000031002895000041003205000095003616500024004563687687OSt20190924115919.0781005s1948    enka          001 0 eng    a   78307550   aDLCcDLCdDLC00aRA407b.H55 194800a610.727 HIL1 aHill, Austin Bradford,cSir,d1897-10aPrinciples of medical statistics,cby A. Bradford Hill.  a5th ed., .  aLondon,bThe Lancet,c1949.  axi, 252 p.billus.c22 cm.  aOn cover: Postgraduate series, v. 3.  aAppeared originally as weekly articles in the Lancet during the first four months of 1937. 0aMedical statistics.