Organochlorine insecticides:PrThr:Pt:XXX:Ord:Screen
organochlorine insecticides:prthr:pt:xxx:ord:screen
Organochlorine insecticides:Presence or Threshold:To identify measures at a point in time:Not specified:Ordinal:Screen
organochlorine insecticides:presence or threshold:to identify measures at a point in time:not specified:ordinal:screen