00379nam a2200133Ia 4500008004100000020001800041082001600059100001900075245003200094260004500126300002000171650003200191800002200223170628s9999    xx            000 0 und d  a9780763754433  a614.4 bFRI  dFriis Robert H  aEpidemiology 101h(English)  c2010bJones & Bartlett LearningaSudbury  axviii,220p.bPB  aCommunity & Family Medicine  dRichard Riegelman