never on the bestsellers list

tuvor6

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Feb 9, 2012
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back in the very early 90's, and I have no idea when they were originally published, I read a book series about a massive wave of infertility in humans that a genetic research company solved by making humans that switched genders. now I cannot for the life of me remember anything but that sketchy plot line. any help would be appreciated. thank you.
 

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