sex in grup (doar la nivel de idei)

10. The Mind. Leading scientists explore the brain, memory, personality, and happiness, John Brockman (ed.), 2011

http://www.amazon.com/The-Mind-Scientists-Personality-Happiness/dp/0062025848/ref=tmm_pap_title_0?ie=UTF8&qid=1369573635&sr=1-1