Part of the Springer Study Editions Biology book series (volume 2)
If x is any positive or negative number, the square of x is always positive.
KeywordsComplex Number Polar Angle Logarithmic Function Biological Rhythm Biological Clock
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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© Springer-Verlag Berlin · Heidelberg 1971