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The results were compared with those of previous experiments at Beltsville, when plots were contaminated in spring or midsummer with faeces from parasitized cattle [see V.B. 26, abst. 2640 & 29, abst. 2158]: overall development of larvae was greatest when plots were infected in October and least...

Goldberg, A.; Lucker, J. T.
Journal of Parasitology, 1963, 49, pp 435-442