作 者:Ogbuagu O Ekumankama ;Augustine Ujunwa ;Halidu Ahmad Umar 等
出 处:Management Science and Engineering. 2012 ;6(4):30-41.doi:10.3968/j.mse.1913035X20120604.237
出 版 社:Canadian Research & Development Center of Sciences and Cultures
文 章 ID:100135248