| Zur Systematik | UB Regensburg |
| Acheson, Dean | NQ 8362 |
| Achille, Giuseppe | IV 10080 - IV 10081 |
| Achilles Tatius, Astronomus | FH 68298 - FH 68303 |
| Achillessehnenriss | ZX 9660 - ZX 9669 |
| Achillini, Claudio | IU 8760 - IU 8761 |
| Achi-Sprache | EE 5506 |
| Achleitner, Friedrich | GN 2516 - GN 2517 |
| Achmadulina, Bella | KK 2753 - KK 2754 |
| Achmatova, Anna | KI 2650 - KI 2656 |
| Achnanthaceae | WL 3255 |
| Achomawi | EE 2561 |
| Achse | ZL 4150 ZO 5200 |
| Achsenmächte | NQ 2420 |
| Acht <Recht> | NT 6006 |
| Achterberg, Gerrit | GU 63036 - GU 63039 |
| Achternbusch, Herbert | GN 2520 - GN 2521 |
| Achtsamkeit | BE 8060 |
| Achtung | BL 9980 |
| Acidophyten | WI 6270 |
| Ackerbohne | ZC 32600 |
| Ackermann, Louise Victoire | IG 5274 |
| Ackroyd, Peter | HN 1694 - HN 1695 |
| Acoela | WQ 8315 |
| Acosta, Agustín | IQ 00900 - IQ 00901 |
| Acosta Hernández, Ángel | IP 3176 |
| Acquarone, Aldo | IV 10120 - IV 10121 |
| Acre (Staat) | IR 2792 |
| Acremant, Germaine | IH 10480 - IH 10481 |
| Acro, Helenius | FX 182498 - FX 182505 |
| Acrylmalerei | LH 70270 |
| Acta fratrum Arvalium | FX 188498 - FX 188505 |
| ACTH | WD 5820 |
| Actinobacillus | XD 5300 - XD 5399 |
| Actinomycetaceae | WF 6800 |
| Actinoplanaceae | WF 6900 |
| Acton, Harold Mario Mitchell | HM 1640 - HM 1645 |
| Actor-Network-Theory | MR 5900 |
| Acuña, Hernando de | IO 2790 - IO 2791 |
| Acusilaus, Argivus | FH 21518 - FH 21523 |
| Ad Atticum | FX 155098 - FX 155105 |
| Ad Brutum | FX 155398 - FX 155405 |
| Ad Caesariensis ecclesiae plebem | FX 349798 - FX 349805 |
| Ad Demonicum | FH 28110 |
| Ad Donatistas post collationem | FX 342698 - FX 342705 |
| Ad familiares | FX 155198 - FX 155205 |
| Ad Nicoclem | FH 28115 |
| Ad Nicomedem regem | FH 49218 - FH 49223 |
| Ad Orosium contra Priscillianistas et Origenistas | FX 348098 - FX 348105 |
| Ad Philippum | FH 28121 |
| Ad Quintum fratrem | FX 155298 - FX 155305 |
| Adab | EN 2814 |
| Adaeus, Macedo | FH 57398 - FH 57403 |
| Adalbero, Laon, Bischof | FY 11828 - FY 11833 |
| Adalbero, Reims, Erzbischof | BN 2125 |
| Adalbert, Magdeburg, Erzbischof, Heiliger | FY 11898 - FY 11903 |
| Adalbertus, Bambergensis | FY 37998 - FY 38003 |
| Adam, Adolphe | LP 63070 |
| Adam, de la Halle | IE 5100 - IE 5105 |
| Adam, George | IH 10520 - IH 10521 |
| Adam, Juliette | IG 5276 |
| Adam, von Bremen | FY 11998 - FY 12003 |
| Adam, von Fulda | LP 22550 LU 22550 |
| Adam, von Sankt Viktor | FY 12008 - FY 12013 |
| Adam z Veleslavína, Daniel | KS 2352 - KS 2353 |
| Adamantius, Alexandrinus | FH 71698 - FH 71703 |
| Adamclisị | LF 1530 |
| Adámek, Bohumil | KS 3690 - KS 3691 |
| Adamić, Stanislava | KW 7350 - KW 7351 |
| Adamnanus, de Iona | FY 12038 - FY 12043 |
| Adamov, Arthur | IH 10560 - IH 10561 |
| Adamovič, Georgij | KK 2790 - KK 2791 |
| Adams, Franklin P. | HU 3000 - HU 3005 |
| Adams, Henry | NB 6412 |
| Adams, Herbert Baxter | HT 3010 - HT 3015 |
| Adams, John | NO 2410 |
| Adams, Robert | LI 10480 |
| Adams, Samuel | HS 3040 - HS 3045 NO 2411 |
| Ādamsons, Ēriks | EZ 7050 - EZ 7051 |
| Adamus, de Bassea | FY 11988 - FY 11993 |
| Adamus, de Parvo Ponte | FY 11978 - FY 11983 |
| Adán Buenosayres | IQ 73720 - IQ 73721 |
| Adán, Martín | IQ 49360 - IQ 49361 |
| Adaptive Erwartung | QC 020 |
| Adaptiver Werkstoff | ZQ 7500 |
| Adaptives System | ZQ 7550 |
| Adaptivregelung | ZQ 5260 |
| Adaptronik | ZQ 7500 ZQ 7550 |
| Addamo, Sebastiano | IV 10200 - IV 10201 |
| Addison, Joseph | HK 1450 - HK 1451 |
| Addison-Krankheit | YC 4300 - YC 4399 |
| Additionsverbindungen | VE 7800 - VE 7809 |
| Additive Typogenese | WH 4000 |
| Additive Zahlentheorie | SK 180 |
| Ade, George | HT 3100 - HT 3105 |
| Adel | ME 2400 MS 1660 |
| Adelboldus, Traiectensis | FY 11948 - FY 11953 |
| Adelbrecht, Priester | GF 1805 - GF 1808 |
| Adelheid, Heiliges Römisches Reich, Kaiserin | NM 6650 |
| Adelsarchiv | ND 1990 |
| © Universitätsbibliothek Regensburg, realisiert von Sepp Kuffer |