by Susan Heinrichs Gray
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Ankylosaurus (Science of Dinosaurs)
Stegosaurus (Science of Dinosaurs)
Allosaurus (Exploring Dinosaurs)
Triceratops (Science of Dinosaurs)
The life cycle of insects
Apatosaurus (Science of Dinosaurs)
Trilobite
Monograph of the British Carboniferous T...
Studies in evolution
Treatise on Invertebrate Paleontology
Histoire naturelle des crustacés
The paleontology of the Niagaran limesto...