Verso n. : The reverse, or left-hand, page of a book or a folded sheet of paper; -- opposed to recto.

Example:
When purchasing a seriolithograph, what does it mean to be "numbered on Verso?"?

Taxonomy
paperback, Giovanni Arrighi, new edition, history, Frankfurt Book Fair, passed away, honour, Peter Gowan, sales increase, cover letter, Shlomo Sand, philosophy, Avi Shlaim, Rob Young, Walden Bello, Wu Ming, Aziz Al-Azmeh, Alain Badiou.

Defination from the web:
Publisher of intelligent, critical works that include authors in the social sciences and humanities, with strength in politics, cultural studies, history, philosophy, sociology and literary criticism.