Dans ce livre, Joachim Barrande d crit le syst me silurien de la r gion centrale de la Boh me avec une pr cision scientifique sans faille. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this...