Title: Sex at Dawn: How We Mate, Why We Stray, and What It Means for Modern Relationships, Author: Christopher Ryan
Title: Civilized to Death: The Price of Progress, Author: Christopher Ryan
Title: En el principio era el sexo: Los orígenes de la sexualidad moderna. Cómo nos emparejamos y por qué nos separamos, Author: Christopher Ryan
Title: City of Woe (Mallory and Gunner Series), Author: Christopher Ryan
Title: Reverse the Aging Process And Start Feeling Younger Again, Author: Christopher Ryan
Title: In principio era il sesso: Come ci accoppiamo, ci lasciamo e viviamo l'amore oggi, Author: Cacilda Jethá
Title: Ideas on Living Stress Free, Author: Christopher Ryan
Title: Living The Paleo Way, Author: Christopher Ryan
Title: Reversing Type 2 Diabetes, Author: Christopher Ryan
Title: Raising Jeffrey Dahmer, Author: Christopher Ryan
Title: Sex - die wahre Geschichte, Author: Christopher Ryan