#reference_book__referencebook__reference__reference_work__referencework__book_of_facts  a book to which you can refer for authoritative facts; "he contributed articles to the basic reference work on that topic"
  supertype:  book  a copy of a written work or composition that has been published (printed on pages bound together); "I am reading a good book on economics"
  subtype:  cookbook__cookery_book__cookerybook  a book of recipes and cooking directions
  subtype:  instruction_book__instructionbook  a book of directions for using or operating some piece of equipment
  subtype:  source_book  a collection of historically important documents published together as a book
  subtype:  wordbook  a reference book containing words (usually with their meanings)
     subtype:  dictionary__lexicon  a reference book containing an alphabetical list of words with information about them
        subtype:  bilingual_dictionary__bilingualdictionary  a dictionary giving equivalent words in two languages
        subtype:  desk_dictionary__deskdictionary__collegiate_dictionary  an abridged dictionary of a size convenient to hold in the hand
        subtype:  etymological_dictionary  a dictionary giving the historical origins of each word
        subtype:  gazetteer  a geographical dictionary (as at the back of an atlas)
        subtype:  learner's_dictionary__learner'sdictionary__schooldictionary  a dictionary specially written for those learning a foreign language
        subtype:  pocket_dictionary__little_dictionary  a dictionary that is small enough to carry in your pocket
        subtype:  spell-checker__spellchecker__spelling_checker  an electronic dictionary in a word processor that can be used to catch misspelled words
        subtype:  unabridged_dictionary  a dictionary that is claimed to be complete
           subtype:  Oxford_English_Dictionary__O.E.D.__OED  an unabridged dictionary constructed on historical principles
     subtype:  onomasticon  a list of proper nouns naming persons or places
     subtype:  vocabulary  a listing of the words used in some enterprise
     subtype:  glossary__gloss__glos  an alphabetical list of technical terms in some specialized field of knowledge; usually published as an appendix to a text on that field
     subtype:  thesaurus__thesauru__synonym_finder__synonymfinder  a book containing a classified list of synonyms
        subtype:  word_finder  a thesaurus organized to help you find the word you want but cannot think of
  subtype:  handbook__enchiridion__vade_mecum  a concise reference book providing specific information about a subject or location
     subtype:  manual  a small handbook
        subtype:  consuetudinary__consuetudinal  a manual describing the customs of a particular group (especially the ceremonial practices of a monastic order)
        subtype:  grimoire  a manual of black magic (for invoking spirits and demons)
        subtype:  instruction_manual__instructionmanual__instructions__book_of_instructions__operating_instructions  a manual usually accompanying a technical device and explaining how to install or operate it
        subtype:  reference_manual__referencemanual  a manual containing information organized in a summary manner
        subtype:  sex_manual__sexmanual  a manual containing instruction in sexual techniques; intended to enhance the reader's sexual life
     subtype:  bible  a book regarded as authoritative in its field
     subtype:  guidebook__guide  something that offers basic information or instruction
        subtype:  field_guide  a guidebook describing natural objects of some type that might be encountered in the field; "a field guide to mushrooms"
        subtype:  roadbook  a guidebook describing the roads of a country; contains maps and (sometimes) a gazetteer
        subtype:  travel_guidebook__itinerary  a guidebook for travelers
           subtype:  baedeker  any of a series of travel guidebooks published by the German firm founded by Karl Baedeker
  subtype:  directory  an alphabetical list of names and addresses
     subtype:  phonebook__telephonebook__telephone_directory__telephonedirectory  a directory containing an alphabetical list of telephone subscribers and their telephone numbers
        subtype:  Yellow_Pages__yellow_pages  a telephone directory or section of a directory (usually printed on yellow paper) where business products and services are listed alphabetically by field along with classified advertising
     subtype:  blue_book.directory__bluebook  a register of persons who are socially prominent
  subtype:  yearbook__annual  a reference book that is published regularly once every year
     subtype:  almanac  an annual publication containing tabular information in a particular field or fields arranged according to the calendar of a given year
     subtype:  farmer's_calendar__almanac  an annual publication including weather forecasts and other miscellaneous information arranged according to the calendar of a given year
     subtype:  ephemeris__ephemeri  an annual publication containing tables that give the positions of the celestial bodies throughout the year; "today computers calculate the ephemerides"
  subtype:  atlas__atla__book_of_maps__map_collection__mapcollection  a collection of maps in book form
     subtype:  dialect_atlas__dialectatla__linguisticatla  an atlas showing the distribution of distinctive linguistic features
  subtype:  encyclopedia__cyclopedia__encyclopaedia__cyclopaedia  a reference work (often in several volumes) containing articles on various topics (often arranged in alphabetical order) dealing with the entire range of human knowledge or with some particular specialty
     subtype:  book_of_knowledge  an elementary encyclopedia dealing with general knowledge

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