http://ro.shvoong.com/medicine-and-health/epidemiology-public-health/ Summaries, Abstracts, Synopses, Reviews, Notes & Short Essays on Epidemiologie Şi Sănătatea Publică Fri, 19 Sep 2008 21:00:00 GMT Cum a aparut nicotina(variante posibile).Unde este folosita si cu ce scop.Multumesc cititorilor fideli!!! http://ro.shvoong.com/medicine-and-health/epidemiology-public-health/1840540-nicotina/ support@shvoong.com http://ro.shvoong.com/medicine-and-health/epidemiology-public-health/1840540-nicotina/ Fri, 19 Sep 2008 21:00:00 GMT