Martin, L. (2013) Studies on the Influence of the Probiotic Enterococcus faecium NCIMB 10415 and the Trace Element Zinc on Performance and Digestive Physiological Parameters in the Small Intestine of Piglets, Berlin: Mensch & Buch Verlag XI, 138 p. с.: tab., ill. 978-3-86387-419-3 : 38.80 лв.