ANRW

Aufstieg und Niedergang der römischen Welt (Berlin and New York).

Rise and decline of the Roman world.

Aufstieg und Niedergang der römischen Welt, commonly referred to by its German acronym, ANRW, or in English as Rise and Decline of the Roman World, is an extensive collection of books dealing with the history and culture of ancient Rome.

See https://en.wikipedia.org/wiki/Aufstieg_und_Niedergang_der_r%C3%B6mischen_Welt.