1. Dewey Decimal Classification – 10 main divisions

2. Dewey Classification – sub-divisions of division 500

3. Dewey Classification – sub-divisions of sub-division 560

4. OPAC (Online Public Access Catalog) - Advanced capabilities  interface friendliness  document representing elements which are not searchable fields  connections between documents  searching and browsing options  options of sorting and viewing the search results  integration of ex-catalog information resources  searchable fields

5. OPAC – document’s cover, table of contents, review

6. OPAC - links to external information resources

7. OPAC – Boolean search, truncation, retrieval limiting

8. OPAC – sorting search results by various elements

9. HIS 2 HIS 3 HIS 1 functional arrangement and notation – History division

10. getting retrieved documents according to a printed list sorted by their functional notation

11. hypotheses  Intellectual retrieval of documents by browsing the OPAC will produce more relevant documents than their retrieval by browsing the shelf  Users of academic libraries already prefer OPAC browsing to shelf browsing, a tendency which will even increase in the future  Intellectual retrieval of relevant documents by browsing the OPAC will take a shorter time than their intellectual retrieval by browsing the shelf

12. results  The OPAC browsing averagely produced 3 times more relevant documents than the shelf browsing  T he preference of retrieving documents by OPAC browsing is increasing while the shelf browsing is decreasing  The OPAC browsing of relevant documents averagely took ½ the time consumed by the shelf browsing of relevant documents