Author

Publication

1999 - Scholastic

Language

English

Word Count

8,000 words, Guess

Page Count

32 pages

Identifiers

  • ISBN-100439099609
  • ISBN-139780439099608
  • OCLC Control Number43920003
  • Open LibraryOL9379525M

First Sentence

Because there are so many kinds of animals, zoologists begin by dividing them into two groups: animals with a backbone (vertebrates) and animals without a backbone (invertebrates).

Subjects

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