Houndonougbo M F, Chrysostome C A A M, Odoulami R C and Codjia J T C 2012:
Feeding behaviour of layer hens supplemented with snail or oyster shells in the last laying phase: effects on egg quality.
Livestock Research for Rural Development. Volume 24, Article #196.
Retrieved
, from http://www.lrrd.org/lrrd24/11/houn24196.htm