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Keywords from Image Description:
FMIB Potamogeton pectinatus.jpeg Potamogeton pectinatus Gigantic form of Dudley Gigantic form of Dudley gigantic form of Dudley gigantic form of Dudley Subject Potamogeton Tag Aquatic Botany Cite book Potamogetons in Relation to Pond Culture Moore Emmeline Washington DC Government Printing Office Bulletin of the United States