INOSR ARTS AND MANAGEMENT Volume 7 Issue 1, 2021 A Philosophical Appraisal of Gottfried von Leibniz’s Notion of God’s Existence and the Problem of Evil in the World. Isidore U. Nwanaju Full Text Influence of Authoritarian Leadership Style of Principals on Classroom Instruction in Onueke Education Zone of Ebonyi State, Nigeria. Nwuguru Chibuike Collins, Obasi Omobonike Ugochukwu and Nwite Onuma Full Text David Hume’s ‘Epistemic Polis’ on Causality and Its Impact on the Problem of Induction in Scientific Methodology Isidore U. Nwanaju Full Text Imploring Strategic Communication Skill in Dialogue for Community Development Onwe, Emma Chike, Nworie Chinenye Happiness and Onyemachi, Jude N. Full Text