TY - RPRT TI - The effects of grazers and light penetration on the survival of transplants of Vallisneria americana Michs in the tidal Potomac River, Maryland AU - Virginia Carter AU - Nancy B. Rybicki PY - 1985 DO - 10.1016/0304-3770(85)90066-x UR - https://pubs.usgs.gov/publication/70013024 ID - 70013024 ER -