TY - RPRT TI - Lead isotope relations in oceanic Ridge basalts from the Juan de Fuca-Gorda Ridge area N.E. Pacific Ocean AU - S. E. Church AU - M. Tatsumoto PY - 1975 DO - 10.1007/bf00382443 UR - https://pubs.usgs.gov/publication/70001218 ID - 70001218 ER -