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Twenhofel, William H. 1875-1957,

Principles of invertebrate paleontology / Robert r. shrock, William h. twenhofel - 2 # a revised and enlarged / Of twenhofel and shrock - 816 páginas - International series in earth sciences .

Subjects--Topical Terms:
Invertebrados fósiles

LC Class. No.: QE770 / T83