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
Peterson, Lee Allen, author
A field guide to edible wild plants of eastern and Central North America
Houghton Miffiln, 1977
 Buku Teks
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
Borror, Donald J., author
A field guide to the insects of America north of Mexico
Houghton Mifflin, 1976
 Buku Referensi
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