9781621260196 (folded sheet ; Common Butterflies of the Midwest)
1621260194 (folded sheet ; Common Butterflies of the Midwest)
9781935380641 (folded sheet ; Backyard Birds of the Midwest)
1935380648 (folded sheet ; Backyard Birds of the Midwest)
9781935380535 (folded sheet ; Common Trees in the Cities & Towns of the Mid-Atlantic & Midwest)
1935380532 (folded sheet ; Common Trees in the Cities & Towns of the Mid-Atlantic & Midwest)
9781426327407 (softcover ; Insects)
1426327404 (softcover ; Insects)
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