Dissertations, Academic (Ph.D) 144 Management 99 Organizational effectiveness 93 Effective teaching 78 MVSc 78 Leadership 76 Agronomy 73 Education 59 Business communication 54 Mass media 54 Thesis (Ph.D)-Education 47 Agriculture 45 History 45 Physiological effect 43 Research 43 Soil Science and Agricultural Chemistry 43 MPhil Dissertations 42 Social aspects 42 Agricultural Entomology 41 Psychology 38 Climatic changes 36 Communication 36 Pharmacology and Toxicology 34 Plant Biotechnology 34 Global warming 32 Plants 32 Social sciences 32 Teaching 32 Communication in management 31 Environmental pollution-- Effects of humans, pollution on ecology 31