A field guide to reptiles & amphibians : eastern and central North America (Peterson field guide series )

A field guide to western reptiles and amphibians

Reptiles of North America : a guide to field identification

Reptiles of North America : a guide to field identification

A field guide to reptiles and amphibians of the United States and Canada east of the 100th meridian

National Geographic pocket guide to the reptiles & amphibians of North America

Familiar reptiles and amphibians

National Audubon Society field guide to North American reptiles and amphibians

The reptiles of North America; a review of the crocodilians, lizard, snakes, turtles and tortoises inhabiting the United States and northern Mexico

A guide to amphibians and reptiles

Reptiles & amphibians for dummies

Birds of North America. Eastern region : a quick identification guide to common birds

A field guide to freshwater fishes : North America north of Mexico

Amphibians and reptiles of Pennsylvania and the Northeast

A field guide to venomous animals and poisonous plants, North America, north of Mexico

Herp help

North American trees (exclusive of Mexico and tropical United States) A handbook designed for field use

A field guide to medicinal plants and herbs of eastern and central North America

Pennsylvania amphibians & reptiles

Snakes and other reptiles and amphibians

Field guide to weeds : based on Wildly successful plants

Trees of North America and Europe

The National Audubon Society field guide to North American trees

Peterson field guide to moths of northeastern North America

A field guide to trees and shrubs : northeastern and north-central United States and southeastern and south-central Canada

Reptiles of the world : th crocodilians, lizards, snakes, turtles and tortoises of the eastern and western hemispheres

The easy tree guide : common native and cultivated trees of the United States and Canada

Tree finder : a manual for the identification of trees by their leaves

Wildly successful plants : a handbook of North American weeds

North American mushrooms : a field guide to edible and inedible fungi

Life In Cold Blood

A field guide to eastern trees : eastern United States and Canada, including the Midwest

Peterson field guide to birds of Western North America

National Audubon Society first field guide. Amphibians

A field guide to warblers of North America

National Audubon Society first field guide. Trees

Field guide to North American edible wild plants

The Audubon Society field guide to North American birds, eastern region

Field guide to mammals of North America

Field guide to the birds of North America

Field guide to the birds of North America