History 73 Literature 69 Annals of Mathematics Studies 55 Drama 49 Criticism 47 Viral, Bacterial and Fungal Diseases of Plants, (New March 2000) 44 English 43 Pitman Research Notes in Mathematics 43 Plant diseases 43 Malayalam; Ancient Poetry 42 William Shakespeare 39 Lecture Notes in Pure and Applied Mathematics 38 Microbiology 38 Biotechnology 37 Research 37 മലയാളം; പ്രാചീനകൃതികള്‍ 37 Literature Hindi 35 Dissertations, Academic (Ph.D) 34 Malayalam; Malayalam Literature; Malayalam Short Stories 33 മലയാളം; മലയാളം സാഹിത്യം; മലയാളം ചെറുകഥകള്‍ 33 Plant pathogens 31 Plant Pests, (New March 2000) 29 methods 28 English;Journal 27 Hindi literature 27 മലയാളം; 27 Plant pests 26 Management 25 മലയാളം; സംസ്കൃത ക്ലാസിക്കുകള്‍ 25 Malayalam; 24