These are the numbers on the spine of the book that tell you where the Political Science books are on the shelves:
320 Political science
321 Systems of governments & states
322 Relation of state to organized groups
323 Civil & political rights
324 The political process
325 International migration & colonization
326 Slavery & emancipation
327 International relations
328 The legislative process
340s Constitution, Courts, Law
Tips:
