TY - RPRT TI - The UThPb age of equilibrated L chondrites and a solution to the excess radiogenic Pb problem in chondrites AU - D.M. Unruh PY - 1982 DO - 10.1016/0012-821x(82)90104-2 UR - https://pubs.usgs.gov/publication/70011914 ID - 70011914 ER -