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Reklamní fotografie - Graph of the stages of sleep during an 8 hour sleep period, from awake, through stage 2 and REM sleep, down to stage 4

Graph of the stages of sleep during an 8 hour sleep period, from awake, through stage 2 and REM sleep, down to stage 4
ID obrázku : 30686518
Typ média : Vektor
Autorské právo : Peter Lamb
3193 x 1556 px | 10.64 " x 5.19 " | 300dpi | JPG
Klíčová slova k fotografiím