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M. L.  Tombesi, Papeschi, A. G., and Mola, L. M., ?Spermatogenesis in Bovicola limbata Gervais, 1844 and B. caprae Gurlt, 1843 (Phthiraptera: Ischnocera)?, Cytologia (Tokyo), vol. 64, no. 1, pp. 25 - 27, 1999.