[Hygienic importance of nitrogen fertilizers].
Valetko
I I
II
D000818:Animals; D005308:Fertilizers / Q000009:adverse effects*; D005506:Food Contamination / Q000517:prevention & control; D006801:Humans; D006920:Hygiene; D009566:Nitrates / Q000009:adverse effects*; D014586:USSR
D005308:Fertilizers; D009566:Nitrates
Gigienicheskoe znachenie azotnykh udobreniĭ.