Books by International Geological Congress
Cambro-Ordovician carbonate ba
Cambro-Ordovician carbonate banks and siliciclastic basins of the United States Appalachians
Preliminary report on biostrat
Preliminary report on biostratigraphic units
The coal resources of the world
Congrès Géologique Internation
Congrès Géologique International, 7-me session, Russie
... Compte rendu de la 2me session, Bologne, 1881