Intestinal helminths infection of rats (Ratus norvegicus) in the Belgrade area (Serbia): the effect of sex, age and habitatM. Kataranovski, I. Mirkov, S. Belij, A. Popov, Z. Petrović, Z. Gačić and D. KataranovskiParasite, 18 2 (2011) 189-196DOI: https://doi.org/10.1051/parasite/2011182189