Laboratory manuals 180 Manuals 93 Handbooks, manuals, etc 83 Handbooks 47 methods 39 Electronics-Laboratory Manuals 33 Research 33 Chemistry, Organic 30 Handbooks, manuals etc 29 Literature 29 English language 27 History 27 Analysis 25 Criticism and interpretation 25 Chemistry 23 History and criticism 23 India 23 Microbiology 23 Proteins 21 Religion 21 Report writing 21 Biotechnology 19 Molecular biology 19 Education 17 Academic writing 16 Authorship 15 Chemistry inorganic 15 Handbook 15 Molecular cloning 15 Islam 14