The content of lead in some organs and tissues of Hereford bull-calvesK. N. Narozhnyh, Y. V. Efanova, V. L. Petukhov, O. S. Korotkevich, B. A. Skukovsky and G. N. KorotkovaE3S Web of Conferences, 1 (2013) 15003DOI: https://doi.org/10.1051/e3sconf/20130115003