The secret clocks
Subtitle: time senses of living things
By: Seymour Simon ; illustrated by Jan Brett.
Contributors: Brett, Jan, 1949-
Publisher: Macmillan/McGraw-Hill School Pub.; Macmillan/McGraw-Hill School Division
Published: 1994
Place of publication: New York
Number of pages: 74
ISBN-13: 9780021795314
Subjects: Biological rhythms.; Biological rhythms -- Juvenile literature.
Genres: Juvenile literature.
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.