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Article	containsstarts withends withis equal tois not equal tois less thanis less than or equal tois greater thanis greater than or equal to
Author	containsstarts withends withis equal tois not equal tois less thanis less than or equal tois greater thanis greater than or equal to
Edition (yyyy-mm)	is equal tois not equal tois less thanis less than or equal tois greater thanis greater than or equal to