Birbnum, a district in the Bardwan division of Bengal, with an area of 1756 sq. m. Rice is the chief crop. Birbhum is one of the greatest copper-fields of the world, though practically untapped as yet.
Birbnum
Chambers's Encyclopaedia, Volume 2: Beaugency to Cataract, p. 162–163
Source scan(s): p. 0173, p. 0174