| Concepts | Sum | Mean | Median | Mode |
| Technology | 347 | 7.9 | 7.0 | 7 |
| Management | 249 | 5.7 | 5.0 | 5 |
| Organization of Information | 170 | 3.9 | 4.0 | 3 |
| Database Development | 132 | 3.0 | 2.5 | 2 |
| Searching | 117 | 2.7 | 2.0 | 2 |
| Collection Development | 112 | 2.6 | 3.0 | 3 |
| Math. Methods | 110 | 2.5 | 2.0 | 1 |
| Sociocultural | 105 | 2.4 | 2.0 | 2 |
| Non-Print Media | 97 | 2.2 | 2.0 | 1 |
| Indexing | 96 | 2.2 | 2.0 | 2 |
| Rare Materials | 92 | 2.1 | 2.0 | 2 |
| Biomedical Info. | 76 | 1.7 | 2.0 | 1 |
| Internet | 71 | 1.6 | 1.0 | 1 |
| Reference | 68 | 1.5 | 1.0 | 1 |
| Conservation | 63 | 1.4 | 2.0 | 2 |
| Publishing | 61 | 1.4 | 1.0 | 1 |
| Telecommunication | 55 | 1.3 | 1.0 | 1 |
| Law Info. | 50 | 1.1 | 1.0 | 1 |
| Archives | 48 | 1.1 | 1.0 | 1 |
| Children services | 47 | 1.1 | 1.0 | 1 |
| Education | 47 | 1.1 | 1.0 | 1 |
| Social science Info. | 46 | 1.0 | 1.0 | 1 |
| Globalization | 44 | 1.0 | 1.0 | 1 |
| Professional issues | 43 | 1.0 | 1.0 | 1 |
| Communications | 43 | 1.0 | 1.0 | 1 |
| Bibliography | 43 | 1.0 | 1.0 | 1 |
| Humanities | 40 | 0.9 | 1.0 | 1 |
| Technical services | 40 | 0.9 | 1.0 | 1 |
| Qualities of Information | 38 | 0.9 | 1.0 | 1 |
| Business Info. | 38 | 0.9 | 1.0 | 1 |
| Reading | 37 | 0.8 | 1.0 | 1 |
| Literature | 37 | 0.8 | 1.0 | 1 |
| Standards | 36 | 0.8 | 1.0 | 1 |
| School Media | 35 | 0.8 | 1.0 | 1 |
| HCI | 34 | 0.8 | 1.0 | 0 |
| Public Library | 32 | 0.7 | 1.0 | 1 |
| Science & Technology Info. | 30 | 0.7 | 1.0 | 1 |
| IRM | 30 | 0.7 | 1.0 | 1 |
| Research Methods | 30 | 0.7 | 0.5 | 0 |
| Music Info. | 21 | 0.5 | 0 | 0 |
| Academic Library | 18 | 0.4 | 0 | 0 |
| AI | 18 | 0.4 | 0 | 0 |
| Multimedia | 17 | 0.4 | 0 | 0 |
| Architecture | 17 | 0.4 | 0 | 0 |
| Services | 16 | 0.4 | 0 | 0 |
| Bibliometrics | 16 | 0.4 | 0 | 0 |
| Cognition | 16 | 0.4 | 0 | 0 |
| Cartography | 15 | 0.3 | 0 | 0 |
| Linguistics | 14 | 0.3 | 0 | 0 |
| Consultants | 12 | 0.3 | 0 | 0 |
| GIS | 9 | 0.2 | 0 | 0 |
| Museums | 7 | 0.2 | 0 | 0 |