TY  - BOOK
AU  - Ruhl, Henry A.
CN  - I 19.76:
CY  - Reston, Va. :
CY  - Denver, Colo. :
DA  - 1999.
ID  - 239421
KW  - Aquatic plants
KW  - Water quality
N1  - Cover title.
N1  - Shipping list no.: 2000-0887-M.
PB  - Dept. of the Interior, U.S. Geological Survey ;
PB  - Branch of Information Services [distributor],
PP  - Reston, Va. :
PP  - Denver, Colo. :
PY  - 1999.
T1  - Distribution and abundance of submersed aquatic vegetation in the tidal Potomac River and upper Potomac Estuary, Maryland, Virginia, and the District of Columbia, 1993-1998
TI  - Distribution and abundance of submersed aquatic vegetation in the tidal Potomac River and upper Potomac Estuary, Maryland, Virginia, and the District of Columbia, 1993-1998
ER  -