TY - RPRT TI - Map showing morphometry, bathymetry, and soft-sediment thickness of Plow Shop Pond and Grove Pond, Ayer, Massachusetts AU - A.M. Mercadante AU - J.A. Colman AU - M. L. Buursink PY - 1999 DO - 10.3133/wri994241 UR - https://pubs.usgs.gov/publication/wri994241 ID - wri994241 ER -