Article
Reference
Une notation graphique des charbons et ses applications
LOMBARD, Augustin
LOMBARD, Augustin. Une notation graphique des charbons et ses applications. Eclogae Geologicae Helvetiae, 1943, vol. 36, no. 2, p. 197-201
Available at:
http://archive-ouverte.unige.ch/unige:138215
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