TY - SER AU - Graham,D.W. AU - Christie,D.M. AU - Harpp,K.S. AU - Lupton,J.E. TI - Mantle plume helium in submarine basalts from the Galápagos platform U1 - 551.4608 23 PY - 1993/// N2 - BIB Now: 3262 ER -