[The significance of relative and absolute length of day and night for the photoperiodic reaction in insects].
D000818:Animals; D002940:Circadian Rhythm; D007313:Insecta / Q000502:physiology*; D008027:Light; D013696:Temperature
O znachenii sootnosheniia i absoliutnoĭ prodolzhitel'nosti dnia i nochi dlia fotoperiodcheskoĭ reaktsii nasekomykh.