Lehmann&Voss&Co. KG
Erb (7440-52-0)
Dysproz (7429-91-6)
Holm (7440-60-0)
Europ (7440-53-1)
Prazeodym (7440-10-0)
Samar (7440-19-9)
Gadolin (7440-54-2)
Treb (7440-27-9)
Tul (7440-30-4)
Iterb (7440-64-4)
Lutet (7439-94-3)
Lit (7439-93-2)