The copies held in the Larkin collection were formerly owned by B.C. Bloomfield. With dust-jacket.
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
Required writing : miscellaneous pieces, 1955-1982 by Philip Larkin. ISBN 0571134815. Published by Faber in 1983. Publication and catalogue information, links to buy online and reader comments.
