HARVARD LIBRARY EXPLORER
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Browse the library collection by clicking this bar

Bar width denotes # of books in category

color denotes subject

opacity denotes "popularity" (circulation events/total books)


Key
  • A - General Works
  • B - Philosophy, Psychology, Religion
  • C - Auxiliary Sciences of History
  • D - History: General & Outside the Americas
  • E - History: United States
  • F - History: United States Local & America
  • G - Geography, Anthropology, Recreation
  • H - Social Sciences
  • J - Political Science
  • K - Law
  • L - Education
  • M - Music
  • N - Fine Arts
  • P - Language and Literature
  • Q - Science
  • R - Medicine
  • S - Agriculture
  • T - Technology
  • U - Military Science
  • V - Naval Science
  • Z - Library Science & Information Resources
Holdings
The graph above shows a running total of books published in the given subject by year, from 2000-2010.
A-Z
0
-1000
All the Books
Total number of circulation events (2002-2011):

232,0131
Total number of books held:

12,384,023
Ratio of books to circulation events

.23
Circulation
Circulation events include any time a book is checked out, put on course reserve, held, or lost.
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