Houndonougbo M F, Chrysostome C A A M, Odoulami R C and Codjia J T C 2012:
Snail shell as an efficient mineral feedstuff for layer hens: Effects and optimum rate.
Livestock Research for Rural Development. Volume 24, Article #162.
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, from http://www.lrrd.org/lrrd24/9/houn24162.htm