TY  - RPRT
TI  - Variations in titanium and chromium concentrations in magnetite separates from beach and offshore sediments, San Francisco and San Mateo counties, California; Part A
AU  - Gretchen Luepke
PY  - 1994
DO  - 10.3133/ofr9515
UR  - https://pubs.usgs.gov/publication/ofr9515
ID  - ofr9515
ER  -