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A guide to selected invasive non-native aquatic plants in Massachusetts
C. B. Hellquist · Massachusetts Dept. of Environmental Management, Lakes and Ponds Program
18 sayfa · 2001
Invasive plants / Aquatic plants
Aquatic vascular plants of New England
C. B. Hellquist · New Hampshire Agricultural Experiment Station, University of New Hampshire
Sayfa sayısı yok · 1980
Aquatic plants / Geographical distribution / Identification / Maps / Wetland plants
A guide to invasive non-native aquatic plants in Massachusetts
C. B. Hellquist · Massachusetts Dept. of Environmental Management, Lakes and Ponds Program
13 sayfa · 1997
Aquatic plants / Invasive plants / Alien plants