"Analytische chemie." . . . . "Yttrium." . . "Lanthanoide." . . "Analyse." . . . . . "Analytical chemistry of yttrium and the lanthanide elements" . "Analytical chemistry of yttrium and the lanthanide elements"@en . . . . . . . . . . . . . . . . . "Analiticheskaya khimiya redkozemel'nykh elementov i ittriiya" . . "Lanthaniden." . .