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HalvorsenO. and WisslerK. 1983. Methods for estimating the density of Elaphostrongylus rangiferi Mitskevich (Nematoda, Metastrongyloidea) larvae in faeces from reindeer, Rangifer tarandus L. Rangifer. 3, 1 (May 1983), 33-39. DOI:https://doi.org/10.7557/2.3.1.465.