General encyclopedic works - World Digital Library
With a total of 96 digitized books (as of Nov.2021), this collection includes all 86 volumes of the Brockhaus and Efron Encyclopedic Dictionary (Entsiklopedicheskii Slovar'), published in Saint Petersburg, Russia, in 1890–1907 and Muḥyiddin ibn Arabi's Al-Futuhat al-Makkiyya (The Meccan revelations)