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Dyfyniad Arddull ChicagoDwight D Bowman, J Vassilios Theodorides, and R Jay Georgi. Parasitology for Veterinarians. 6TH. Philadelphia, 1995.
Dyfyniad MLADwight D Bowman, et al. Parasitology for Veterinarians. 6TH. Philadelphia, 1995.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.