TY - BOOK AU - Udomah, Michael George ED - University of Oklahoma Health Sciences Center - Thesis ( Ph.D )( Environmental Health )( 1981 ) TI - Automobile impact injury severity among Calabar , Nigeria drivers and factors influencing the frequency of safety belt usage AV - HE5614.5.N6U3 PY - 1981/// KW - Traffic safety - Nigeria KW - Accidents - Prevention KW - Safety belt KW - HE N1 - Facsimile printed by university microfilms; Thesis ( Ph.D ) ( Environmental Health ) - University of Oklahoma Health Sciences Center , 1981 ER -