000			00333nam a2200121Ia 4500
008			160509s9999 xx 000 0 und d
020			_a0-316-54259-8
100			_aMacMohan, Brain
245			_aEpidemiology: principles and methods : Per(Clinic)
260			_bLittle,Brown and company _c1970
300			_a376p.
650			_aEpidemiology
999			_c2910 _d2910