https://shop.elsevier.com/books/male-accessory-sex-organs/brandes/978-0-12-125650-0
Male Accessory Sex Organs - 1st Edition | Elsevier Shop
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https://www.livescience.com/27455-otter-sex-organs-endocrine-disruptors.html
Otters Sex Organs Deformed | Endocrine Disruptors | Live Science
Feb 26, 2013 - As England's otters are showing up with deformed penises and other sex organs, scientists wonder if the culprit is endocrine-disrupting chemicals.
sex organsendocrine disruptorsottersdeformedlive