TY - RPRT TI - δ 30 Si systematics in a granitic saprolite, Puerto Rico AU - Karen Ziegler AU - Oliver A. Chadwick AU - Arthur F. White AU - Mark A. Brzezinski PY - 2005 DO - 10.1130/g21707.1 UR - https://pubs.usgs.gov/publication/70028224 ID - 70028224 ER -