Subjects: *Forest regeneration; Vegetation surveys; Floodplain forest ecologyMissouri River; North Dakota
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Subjects: *Plant diversity; *Plant conservation; *Biodiversity conservationBrazil
Subjects: *Forest surveys; *Natural resources surveys; *Plant communities
Subjects: *Pesticide use regulations; Legislative bills; Vegetation surveysNew York (State); United StatesUnited States. Congress. House. Committee on Agriculture ; New York (State). Legislature...
Subjects: *Conservation of natural resources -- Government policy; Botanical research; Research lawsUnited States
Subjects: Letters to the editor; Vegetation surveys