Peterson, Roger Tory, author
A field guide to the birds : a completely new guide to all the birds of eastern and central North America
Houghton Miffiln, 1980
 Buku Referensi
Clark, William S., author
A field guide to hawks North America
Houghton-Miffiln, 1987
 Buku Teks
Robins, C. Richard, author
A field guide to Atlantic Coast fishes: North America
Houghton-Miffiln, 1986
 Buku Teks
Peterson, Lee Allen, author
A field guide to edible wild plants of eastern and Central North America
Houghton Miffiln, 1977
 Buku Teks
Howe, Hartley Edward
North American maritime mumeums: an annotated guide / Hartley Edward Howe
Facts on file, 1987
 Buku Teks
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