n.b. there were at least three printings before the november 1994 publication date-of-record, and almost certainly a near-identical book club associates printing:
to differentiate between most of these, refer to the indica printing history of the copy held where the gollancz statements of second impression, third impression (etc.) appear; the presumed bca edition may be harder to distinguish - but, at least to start with, bca editions of the discworld books were a smaller format h/cvr than the true gollancz editions.