Roszalina Ramli. Effectiveness of motocycle helmets for preventing head and facial injuries / Roszalina Ramli. - United Kingdom : Monash University, 2013 - xv, 283 p. : ill. (photograhs) ; 30 cm. Thesis (Degree of Doctor of Philosophy) - Monash University, 2013 References : p. 260 - 282 Subjects--Corporate Names: Monash University--Dissertations. Subjects--Topical Terms: Dissertations, Academic--Australia.Facial Injuries--Malaysia.Maxillofacial injuries--Malaysia.Helmet Use--motorcylists--Malaysia.