2024-07-16T07:40:00Z https://academicjournals.org/oai-pmh/handler The argument 'oai%3Aacademicjournals.org%3AJPHE%3A950451759572' (value='') included in the request is not valid. The argument 'identifier' (value='oai%3Aacademicjournals.org%3AJPHE%3A950451759572') included in the request is not valid. The combination of the given values results in an empty list.