[Seasonal reciprocity relation between mortality- and reproduction figures].
D001683:Biological Clocks; D001723:Birth Rate; D003491:Cybernetics; D005859:Germany, East; D006801:Humans; D009026:Mortality; D012621:Seasons
Uber reziproke Beziehungen zwischen Sterbe- und Zeugeziffern im Saisonverlauf.