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A - Abencerrages | Aber - Aceldama | Acerose - Adam, The Right Hon. William | Adamawa - Affidavit | Affiliation - Ainhum | Ainmuller - Albuquerque, Alfonso d' | Alcaeus - Algiers | Algoa Bay - Alnwick | Aloe - Amboyna | Ambrose - Anabolism | Anacanthini - Andros | Andujar - Annulet | Annulosa - Antiphlogistic Treatment | Antiphon - Apophis | Apophthegm - Arabgir | Arabi - Arcot | Arcot districts - Aristoxenus | Arithmetic - Artedi | Artemia - Ashford | Ashlar - Astigmatism | Astley - Atrypa | Atta - Aurora | Aurora Borealis - Axil | Axim - Azymites
Aber
Aberavon
Abercrombie
Abercromby, James
Abercromby, Sir Ralph
Aberdare
Aberdeen
Aberdeen, Scotland
Aberfeldy
Abergavenny
Abernethy
Aberration of light
Aberration, Chromatic
Aberystwith
Abeyance
Abhorrers
Abigail
Abimelech
Abingdon
Abiogenesis
Abjuration
Abkhasia
Abner
Abolitionists
Abolla
Abomey
Aborigines
Abortion
Aboukir
About, Edmond Francois Valentin
Abracadabra
Abraham
Abraham-man
Abranchiate animals
Abrantes
Abrus
Abruzzo
Absalom
Abscess
Abscissa
Absentee
Absinth
Absolution
Abstract
Absurdum, Reductio ad
Abu
Abu-Klea
Abul-Faraj
Abul-Feda
Abutment
Abydos
Abyssinia
Academy
Acadia
Acantharia
Acanthocephala
Acanthocladidae
Acanthology
Acanthopterygii
Acanthotelson
Acanthoteuthis
Acanthus
Acapulco
Acarina
Acarnania
Accadians
Acceleration
Accent
Accentor
Acceptance
Accession
Accessory
Accidentals
Acclimatisation
Accommodation Bill
Accommodation of the Eye
Accompaniment
Accordion
Account
Accountant
Accrah
Accrington
Accumulation
Accumulator
Aceldama