Haku
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Cholecalciferol and 25-hydroxycholecalciferol content of chicken egg yolk as affected by the cholecalciferol content of feed
(American Chemical SocietyAmerican Chemical Society, 1999)
Munanpainon rajoittaminen ruokinnallisin keinoin
(Suomen Siipikarjaliitto, 1997)