For Us The Living
Robert A. Heinlein
The God Engines
John Scalzi
Flatland: A Romance of Many Dimensions (Mobi Classics)
Edwin A Abbott,
Anathem
Neal Stephenson
The effects of androgen depletion on human erectile function: ...
C Bettocchi & F Palumbo & L Cormio & P Ditonno & M Battaglia & F P Selvaggi
International Journal of Impotence Research (16.06)