Christopher Ryan
Christopher Ryan has written at least 7 books. Their most popular book is Sex at Dawn: How We Mate, Why We Stray, and What It Means for Modern Relationships with 162 saves with an average rating of 3.81⭐.
 Sex at Dawn: How We Mate, Why We Stray, and What It Means for Modern Relationships
| 3.81 | 63 reads | |
 Civilized to Death Civilized to Death
| 3.67 | 4 reads | |
 Civilized to Death: The Price of Progress
| 4.83 | 7 reads | |
 Paritellen Paritellen : seksuaalikäyttäytymisen kehityshistoria
| 4 | 1 read | |
 In principio era il sesso In principio era il sesso
| 4 | 1 read | |
 Civilized to Death: The Price of Progress
| 0 | 0 reads | |
 Sex at Dawn Sex at Dawn: The Prehistoric Origins of Modern Sexuality
| 4 | 1 read |