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Pachycephalosaurus : Dinosaurs Series
Janet Riehecky, Llyn Hunter
Library Binding (The Childs World Inc, Sept. 1, 1990)Presents known and hypothesized information about the dinosaur Pachydephalosaurus, including its discovery, physical appearance, and lifestyle.
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Pachycephalosaurus : Dinosaurs Series by Janet Riehecky
Janet Riehecky
Library Binding (Childs World (1990-09-01), March 15, 1656)None