Geology of North America with two reports on the prairies of Arkansas and Texas, the Rocky mountains of New Mexico, and the Sierra Nevada of California, originally made for the Uni... von Marcou, Jules 1824-1898

“… Zürcher & Furrer [u.a.] …”

Der versteinerte Wald zu Chemnitz von Wehrli, Leo 1870-1954

“… Zürcher & Furrer [u.a.] …”