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Concretes based on organic materials such as the pitch, the asphalts, bitumens, kérosines, the resins, gums, etc, residues of the distillation of the tar or oil of turpentine, etc, or the products of the conversion of these various body
Concretes based on organic materials such as the pitch, the asphalts, bitumens, kérosines, the resins, gums, etc, residues of the distillation of the tar or oil of turpentine, etc, or the products of the conversion of these various body
