Agụmakwụkwọ ngwongwo / ọrụ HAL (open archive) 3.0 3.0 nke kpakpando 5 (dabere na 1 nyocha) ỌmarịchaỌ dị ezigbo mmaNkeziOgbenyeJọgburu Site naahiafree_azrarp20/08/2022 HAL is an open archive where authors can deposit scholarly documents from all academic fields. GỤKWUO