ÝËÅÌÅÍÒÛ ÃÈÄÐÎÃÅÍÈ×ÅÑÊÈÅ , Âåðíàäñêèé, 1933,-õèì. ýëåìåíòû, îáðàçóþùèå âîäíûå ì-ëû (ñîåäèíåíèÿ, âûäåëèâøèåñÿ èç âîäíûõ ðàñòâîðîâ).
