Contribution to the palynological and petrographic study of French Coals.
Foreign title:
Contribution a l'etude palynologique et Petro-Graphique des Charbons Francais.
Reference:
Alpern,B. (1959)
Contribution to the palynological and petrographic study of French Coals. [ Contribution a l'etude palynologique et Petro-Graphique des Charbons Francais. ] Thesis.University of Paris 1957(December)
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