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["LC 26.7/2:997/4","Library of Congress, Subject Heading, December 1997","0823-A-01","981044M","980825"]
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["TD 4.10/3:98-01 THRU.98-13/SUPP.","Biweekly Supplemental Index, Large Acft/Rotorcraft, 98-01 To 98-13, January 98 To Present","0431-A-15","981044M","980825"]
["TD 4.10/2:98-01 THRU.98-14/SUPP.","Biweekly Supplemental Index, Small Acft/Rotorcraft, 98-01 To 98-14, January 98 To Present","0431-A-15","981044M","980825"]
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