Kiválasztó szervrendszer- ritchi "Avian osmoregulation" "Avian osmoregulation" Fuente Avian osmoregulation http://people.eku.edu/ritchisong/bird_excretion.htm (אנגלית) מאמר על הפרשות ציפורים "Avian osmoregulation" http://people.eku.edu/ritchisong/bird_excretion.htm http://people.eku.edu/ritchisong/bird_excretion.htm http://people.eku.edu/ritchisong/bird_excretion.htm people.eku.edu http://people.eku.edu/ritchisong/bird_excretion.htm "Avian osmoregulation" http://people.eku.edu/ritchisong/bird_excretion.htm http://people.eku.edu/ritchisong/bird_excretion.htm "Avian osmoregulation" « Urinary System, Salt Glands, and Osmoregulation » http://people.eku.edu/ritchisong/bird_excretion.htm Fuente "Avian osmoregulation" "Avian osmoregulation"