Biochemistry-- Biology 40 Statistics 12 Farm Machinery 11 Microeconomics-- Production economics 9 psychology 9 Functions of complex variables-- Analysis-- Mathematics 8 frequency distributions 8 probabilities 8 Functions of real variables-- Analysis-- Mathematics 7 Computer 6 Econometrics 6 Economics 6 Planting equipments 6 Analysis-- Mathematics 5 Animal reproduction 5 Calculus 5 Farm Tractors 5 Microbiology 5 Plant crops 5 Topology-- Mathematics 5 Agricultural tools 4 Drama criticism-- History-- description-- critical appraisal of literature 4 Mathematical Statistics 4 Meteorology 4 Organizational Behaviour-- Theory & Principle 4 Partial differential Equations 4 Physiology-- Biology 4 Animal Feeding 3 Animal Nutrition 3 Biochemistry 3