TY - RPRT TI - Ostracode δ18O and δ13C evidence of Holocene environmental changes in the sediments of two Minnesota lakes AU - A. Schwalb AU - Sharon M. Locke AU - Walter E. Dean PY - 1995 DO - 10.1007/bf00682429 UR - https://pubs.usgs.gov/publication/70209975 ID - 70209975 ER -