00586nam a2200169   450000500170000000700040001700800040002102000150002504000090004005000250004924500540007426000390012830000200016744000410018752101600022865000280038820170905152616.0000000  a9241540877  aUOEL  aRA1270.I5b.G84 1983  aGuidelines on studisi environmentalm epidemioloy/  aGeneva.bWorld health Orga.cc1983  a393p. ;bIll. :  aEnvironmental health oganizationn27  aublished under the joint sponsorship of the united 
Nations environment Programme, the International Labour organization and the world health organization.  2Epidemiology/vMedicine