Computer science 238 Management 177 Engineering 104 Genetics 95 Mathematics 85 Sociology 76 Plant propagation 63 Biochemistry 62 plant layering 60 plant harvesting 59 Economics 55 Statistics 55 Marketing 49 Psychology 45 Entomology 44 Marketing management 42 Computer Science 40 Education 40 Cytology 38 atmosphere 38 Microbiology 36 Criticism and interpretation 35 Financial management 35 Climatology 34 Extension 34 Operations research 34 Operating systems 33 Philosophy 32 Computer 30 metabolism 30