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@@ -11,7 +11,7 @@ class UniversityLibrarian implements I.Librarian {
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}
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}
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-abstract class ReferenceItem {
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+export abstract class ReferenceItem {
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static department = 'Research';
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private _publisher: string;
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@@ -63,4 +63,4 @@ class Catalog<T extends CatalogItem> implements Inventory<T> {
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}
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-export { Catalog, Journal, ReferenceItem, UniversityLibrarian };
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+export { Catalog, Journal, UniversityLibrarian };
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