clay-graphite mixture,plumbago /INDUSTRY-METAL/
[DE] Graphitschwärze; Schwärzepulver
[EN] clay-graphite mixture; plumbago
[FR] plombagine
black lead,natural graphite,plumbago /INDUSTRY-CHEM/
[DE] Reissblei; Wasserblei; natuerlicher Graphit
[EN] black lead; natural graphite; plumbago
[FR] graphite naturel; mine d plomb; plombagine