00345nam a2200145   45000010005000000030003000050050017000080080041000250350018000660350017000840500020001011000020001212450030001412600028001719580UR20220428183200.0061102|||||||||||||||||||||||||||||||| d  a(janium) 9569  a(janium)9569 4aHA29b.K46 19791 aKenny, David A.10aCorrelation and causality  bJohn Wiley & Sonsc1979