21.
 |  | Title: Library of Congress Classification Schedules Combined with Additions and Changes Through 1989: PG: Russian Literature by Rita Runchock, Kathy Droste ISBN: 0810351862 Publisher: Gale Pub. Date: 01 January, 1991
|
22.
 |  | Title: Library of Congress Classification Schedules Combined with Additions and Changes Through 1989: PQ-1: French Literature by Rita Runchock, Kathy Droste ISBN: 0810351870 Publisher: Gale Pub. Date: 01 November, 1990
|
23.
 |  | Title: Library of Congress Classification Schedules Combined with Additions and Changes Through 1989: PQ-2: Italian and Spanish by Rita Runchock, Kathy Droste ISBN: 0810351889 Publisher: Gale Pub. Date: 01 January, 1991
|
24.
 |  | Title: Library of Congress Classification Schedules Combined with Additions and Changes Through 1989: PT-2: Dutch and Scandinavian by Rita Runchock, Kathy Droste ISBN: 0810351897 Publisher: Gale Pub. Date: 01 November, 1990
|
25.
 |  | Title: Library of Congress Classification Schedules Combined with Additions and Changes Through 1989: P-PA: Philology and Linguistics by Rita Runchock, Kathy Droste ISBN: 0810351919 Publisher: Gale Pub. Date: 01 November, 1990
|
26.
 |  | Title: Library of Congress Classification Schedules Combined with Additions and Changes Through 1989: KDZ-KG-KH by Rita Runchock, Kathy Droste ISBN: 0810351803 Publisher: Gale Pub. Date: 01 November, 1990
|
27.
 |  | Title: Library of Congress Classification Schedules Combined with Additions and Changes Through 1989: P-PZ: Tables by Rita Runchock, Kathy Droste ISBN: 0810351935 Publisher: Gale Pub. Date: 01 November, 1990
|
28.
 |  | Title: Library of Congress Classification Schedules Combined with Additions and Changes Through 1989: P-PM: Index Languages by Rita Runchock, Kathy Droste ISBN: 0810351943 Publisher: Gale Pub. Date: 01 January, 1991
|
29.
 |  | Title: Library of Congress Classification Schedules Combined with Additions and Changes Through 1989: PJ-PK by Rita Runchock, Kathy Droste ISBN: 0810351951 Publisher: Gale Pub. Date: 01 March, 1991
|
30.
 |  | Title: Library of Congress Classification Schedules Combined with Additions and Changes 1989: R - Medicine by Kathy Droste ISBN: 0810352516 Publisher: Gale Pub. Date: 18 May, 1990
|