The secret clocks

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.

שנה

1979

שפה

English

הוצאה

Macmillan/McGraw-Hill School Division

מהדורות

2

ISBN

9780021795314

מקור הנתונים: Wikidata