Abbreviations Acronyms 28 Dictionaries 9 Information science 8 Technology 6 English language 5 Library science 4 Medicine 4 Science 4 Associations, institutions, etc 3 Authorship 3 Bibliography 3 Handbooks, manuals, etc 3 Management 3 Polyglot 3 Proofreading 3 Book industries and trade 2 Dictionaries, Polyglot 2 Directories 2 Electric engineering 2 Electronic data processing 2 Electronics 2 International agencies 2 Libraries 2 Orthography and spelling 2 Societies 2 Syllabication 2 Abbreviations, Portuguese 1 Abbreviations, Spanish 1 Aeronautics 1