مجترات: الفرق بين النسختين

* [https://web.archive.org/web/20170321060123/http://arbl.cvmbs.colostate.edu/hbooks/pathphys/digestion/herbivores/index.html Digestive Physiology of Herbivores] - جامعة ولاية كولورادو

* [https://web.archive.org/web/20170321060123/http://arbl.cvmbs.colostate.edu/hbooks/pathphys/digestion/herbivores/index.html جامعة ولاية كولورادو]