Ecoregions of the Conterminous United States

Informa UK Limited - Tập 77 Số 1 - Trang 118-125 - 1987
James M. Omernik1
1Environmental Research Laboratory — Corvallis , U.S. Environmental Protection Agency , Corvallis, OR, 97333

Tóm tắt

Từ khóa


Tài liệu tham khảo

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