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LCCN n 79-18774 LCCN n 86140996 LCCN sh 85-26371 (1-3 character alphabetic prefix)
(assigned before 1/1/2001)
n79018774 n86140996 sh85026371 -- Omit spaces and hyphens.
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Four numbers (representing a year) followed by six serial numbers.
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LCCN n 2011033569 LCCN no2007000685 LCCN sh2006006990 LCCN gf2011026169 (1-2 character alphabetic prefix)
(assigned after 12/31/2000)
n2011033569 no2007000685 sh2006006990 gf2011026169 -- Omit spaces and hyphens.
-- Make sure your LCCN is 11-12 characters long:
Four numbers (representing a year) followed by six serial numbers.
Add leading zeros if there are fewer than six serial numbers.