Author

Contributions

  • Brett, Jan, 1949- - Contributor

Publication

1979 - Viking Books for Young Readers, New York, New York (State)

Language

English

Word Count

18,500 words, Guess

Page Count

74 pages

Identifiers

  • ISBN-100670628921
  • ISBN-139780670628926
  • LibraryThing3097445
  • Goodreads6856074
  • Library of Congress Control Number78031910
and 2 more

Classifications

  • DDC574.1
  • LCCQH527 .S46

Description

Explains the occurrence of biological clocks, which, for example, tell birds when and where to migrate, plants when to unfurl their leaves, and which affect human beings in various physical and emotional ways.

Subjects

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