sources of information

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Across
  1. 2. A book that lists the words of a language, typically in alphabetical order, and gives their meaning.
  2. 5. A magazine or newspaper published at regular intervals.
  3. 6. A book or electronic resource that lists words in groups of synonyms and related concepts.
  4. 9. A book of maps or charts.
  5. 11. An annual calendar containing important dates and statistical information such as astronomical data and tide tables.
  6. 13. An alphabetical list of names, subjects.
  7. 14. A published collection of poems or other pieces of writing.
Down
  1. 1. A book listing individuals or organizations alphabetically.
  2. 3. An organized system of index cards.
  3. 4. An alphabetical list of terms or words found in or relating to a specific subject.
  4. 7. A book or set of books giving information on many subjects or on many aspects of one subject and typically arranged alphabetically.
  5. 8. A book of instructions.
  6. 10. A guide that explains the symbols, colors, and patterns used in a map or graph to represent data.
  7. 12. A list of the books of a specific author or publisher, or on a specific subject.
  8. 15. A list of chapters, sections, and other elements of a document.