بوقرة, رابح2018-10-152018-10-1520181112-8984http://dspace.univ-msila.dz:8080//xmlui/handle/123456789/5906Noted that at the university level, is still considering the classic study of development economics, looks at the optimum utilization of material resources, financial and human resources in order to achieve the greatest satisfaction of the needs of humanity at the lowest costs, but the new economic concepts related to very specialized areas such as the very modern concept of environmental development, which are of interest to all economists because of its effects on several levels, the Pacific economic environment, social environment, cultural, and on the nature.Article