#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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