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Źródła
1. Deborah L. Duffy and James A. Serpell (2006, November). Non-reproductive effects of spaying and neutering on behavior in dogs. Proceedings of the Third International Symposium on Non-Surgical Contraceptive Methods for Pet Population Control. Alexandria, Virginia.
2. McKenzie B (2010) Evaluating the benefits and risks of neutering dogs and cats. CAB Reviews: Perspectives in Agriculture 5:1-18.
3. Parvene Farhoody (2010) Behavioral and Physical Effects of Spaying and Neutering Domestic Dogs (Canis familiaris). Masters thesis submitted to and accepted by Hunter College.
4. Sanborn LJ. (2007, May) Long-Term Health Risks and Benefits Associated with Spay/Neuter in Dogs. National Animal Interest Alliance.
5. Raport o problemie bezdomnych zwierząt www.boz.org.pl/...
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