TY - RPRT TI - A computer program to calculate centrifugation parameters for sedimentation analyses AU - L. J. Poppe AU - J.J. Fredericks AU - J.C. Hathaway PY - 1988 DO - 10.1016/0098-3004(88)90034-9 UR - https://pubs.usgs.gov/publication/70013304 ID - 70013304 ER -