[PROBLEMS POSED BY THE PRESENT EXIGENCIES OF THE METHODS OF INVESTIGATION OF TRACE ELEMENTS].
D002623:Chemistry Techniques, Analytical; D012106:Research; D014131:Trace Elements
D014131:Trace Elements
CHEMISTRY, ANALYTICAL; EXPERIMENTAL LAB STUDY; TRACE ELEMENTS
PROBLEMAS QUE PLANTEAN LAS ACTUALES EXIGENCIAS DE LOS M'ETODOS DE INVESTIGACI'ON DE OLIGOELEMENTOS.