21.
 |  | Title: Library of Congress Classification Schedules Combined with Additions and Changes Through 1989: N by Rita Runchock, Kathy Droste ISBN: 0810352680 Publisher: Gale Pub. Date: 27 September, 1990
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22.
 |  | Title: Library of Congress Classification Schedules Combined with Additions and Changes Through 1989: K by Rita Runchock, Kathy Droste ISBN: 0810352702 Publisher: Gale Pub. Date: 11 October, 1990
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23.
 |  | Title: Library of Congress Classification Schedules Combined with Additions and Changes Through 1989: KD by Rita Runchock, Kathy Droste ISBN: 0810352710 Publisher: Gale Pub. Date: 18 October, 1990
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24.
 |  | Title: Library of Congress Classification Schedules 1989: HM-HX Sociology by Rita Runchock ISBN: 0810351587 Publisher: Gale Pub. Date: 18 May, 1990
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25.
 |  | Title: Library of Congress Classification Schedules Combined with Additions and Changes Through 1989: PT#2 by Rita Runchock, Kathy Dorste ISBN: 0810352834 Publisher: Gale Pub. Date: 01 January, 1991
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26.
 |  | Title: Library of Congress Classification Schedules Combined with Additions and Changes Through 1989: P-PA by Rita Runchock, Kathy Droste ISBN: 0810352850 Publisher: Gale Pub. Date: 01 April, 1991
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27.
 |  | Title: Class D: Subclasses Dl-Dr : History of Europe, Part 2 : Library of Congress Classification Schedulse : A Cumulation of Additions and Changes Through by Rita Runchock, Kathleen Droste ISBN: 0810362554 Publisher: Gale Group Pub. Date: 01 June, 1993 List Price: $57.00 Amazon.com Price: $57.00 |
28.
 |  | Title: Class D: Subclass Ds History of Asia : Library Fof Congress Classification Schedules : A Cumulation of Additions and Changes Through 1992 by Rita Runchock, Kathleen Droste ISBN: 0810362562 Publisher: Gale Group Pub. Date: 01 June, 1993 List Price: $56.00 Amazon.com Price: $56.00 |
29.
 |  | Title: Class D: Subclasses Dt-Dx History of Africa, Australia, New Zealand, Etc. : Library of Congress Classification Schedules : A Cumulation of Additions by Rita Runchock, Kathleen Droste ISBN: 0810362570 Publisher: Gale Group Pub. Date: 01 May, 1993 List Price: $51.00 Amazon.com Price: $51.00 |
30.
 |  | Title: Class K: Subclass Kf Law of the United States : Library of Congress Classification Schedules : A Cumulation of Additions and Changes Through 1992 by Rita Runchock, Kathleen Droste ISBN: 0810362678 Publisher: Gale Group Pub. Date: 01 September, 1993 List Price: $188.00 Amazon.com Price: $188.00 |