[Nitrates and nitrites in food rations of preschool children].
D002656:Child Day Care Centers; D002675:Child, Preschool; D005506:Food Contamination / Q000032:analysis*; D006801:Humans; D009566:Nitrates / Q000032:analysis*; D009573:Nitrites / Q000032:analysis*; D011044:Poland
D009566:Nitrates; D009573:Nitrites
Azotany i azotyny w racjach pokarmowych dzieci przedszkolnych.