TY - RPRT TI - Upper ordovician (?) and upper silurian formations of the northern Klamath Mountains, California AU - F. G. Wells AU - G.W. Walker AU - C.W. Merriam PY - 1959 DO - 10.1130/0016-7606(1959)70[645:uoausf]2.0.co;2 UR - https://pubs.usgs.gov/publication/70206630 ID - 70206630 ER -