| ↑ | A.St.A.1 | Bibliographic introductions, bibliographies, library catalogues |    →        ≈    |    | 
| ↑ | A.St.A.10 | volumes in collections |    →        ≈    |    | 
| ↑ | A.St.A.11 | History of historiography (in general) |    →        ≈    |    | 
| ↑ | A.St.A.11a | ancient historians, ethnographers and geographers |    →        ≈    |    | 
| ↑ | A.St.A.11b | modern historians |    →        ≈    |    | 
| ↑ | A.St.A.12 | manuals (in general) |    →        ≈    |    | 
| ↑ | A.St.A.13 | Essays (in general) |    →        ≈    |    | 
| ↑ | A.St.A.13a | Greek antiquities |    →        ≈    |    | 
| ↑ | A.St.A.13b | Roman antiquities |    →        ≈    |    | 
| ↑ | A.St.A.13c | agriculture , agronomy |    →        ≈    |    | 
| ↑ | A.St.A.13d | economic and social institutions |    →        ≈    |    | 
| ↑ | A.St.A.13e | demography (history of population, migratory movements, etc.) |    →        ≈    |    | 
| ↑ | A.St.A.13f | political and legal institutions |    →        ≈    |    | 
| ↑ | A.St.A.13g | geography, topography of the ancient world |    →        ≈    |    | 
| ↑ | A.St.A.13h | militaria, navalia |    →        ≈    |    | 
| ↑ | A.St.A.13i | science (in general) |    →        ≈    |    | 
| ↑ | A.St.A.13l | astronomy and mathematics |    →        ≈    |    | 
| ↑ | A.St.A.13m | natural sciences , botany |    →        ≈    |    | 
| ↑ | A.St.A.13n | medicine |    →        ≈    |    | 
| ↑ | A.St.A.13o | technologies |    →        ≈    |    | 
| ↑ | A.St.A.13p | building and urban planning |    →        ≈    |    | 
| ↑ | A.St.A.14 | Oriental history (Persia and Egypt from the VII to the IV sec. a.c.) |    →        ≈    |    | 
| ↑ | A.St.A.15 | Greek history (in general) |    →        ≈    |    | 
| ↑ | A.St.A.15a | Ancient Greece (Aegean civilization: Minoans and Mycenaeans |    →        ≈    |    | 
| ↑ | A.St.A.15b | classical Greek |    →        ≈    |    | 
| ↑ | A.St.A.15c | hellenistic word |    →        ≈    |    | 
| ↑ | A.St.A.16 | Roman history (in general) |    →        ≈    |    | 
| ↑ | A.St.A.16a | history of Rome regia |    →        ≈    |    | 
| ↑ | A.St.A.16b | history of high- and middle-republican Rome |    →        ≈    |    | 
| ↑ | A.St.A.16c | history of late Republican Rome |    →        ≈    |    | 
| ↑ | A.St.A.16d | history of imperial Rome |    →        ≈    |    | 
| ↑ | A.St.A.16e | history of the provinces of the Roman Empire |    →        ≈    |    | 
| ↑ | A.St.A.17 | Byzantine history, |    →        ≈    |    | 
| ↑ | A.St.A.18 | History of Ancient Religions (in general) |    →        ≈    |    | 
| ↑ | A.St.A.18a | primal |    →        ≈    |    | 
| ↑ | A.St.A.18b | oriental (in classical age) |    →        ≈    |    | 
| ↑ | A.St.A.18c | greek |    →        ≈    |    | 
| ↑ | A.St.A.18d | etruscan and italic |    →        ≈    |    | 
| ↑ | A.St.A.18e | roman |    →        ≈    |    | 
| ↑ | A.St.A.18f | primitive Christian (in the Roman imperial period) |    →        ≈    |    | 
| ↑ | A.St.A.18g | Judeo-Hellenistic |    →        ≈    |    | 
| ↑ | A.St.A.19 | papyrology |    →        ≈    |    | 
| ↑ | A.St.A.2 | Encyclopaedias and encyclopedic dictionaries |    →        ≈    |    | 
| ↑ | A.St.A.20 | History, society and culture of barbarian peoples, history of invasions |    →        ≈    |    | 
| ↑ | A.St.A.3 | biographies |    →        ≈    |    | 
| ↑ | A.St.A.4 | Dictionaries, lexicons |    →        ≈    |    | 
| ↑ | A.St.A.5 | Acts of congresses |    →        ≈    |    | 
| ↑ | A.St.A.6 | exhibition catalogues |    →        ≈    |    | 
| ↑ | A.St.A.7 | cronolgies |    →        ≈    |    | 
| ↑ | A.St.A.8 | Historical atlases and aerial photographs |    →        ≈    |    | 
| ↑ | A.St.A.9 | Sources not in necklace |    →        ≈    |    | 
| ↑ | A.St.A.9a | Sources in necklace |    →        ≈    |    |