ISBN are issued by Whittakers - I believe. If someone has their number - they move to Brighton (or should I say Hove too?). The Writers' and Artists' Year book will tell you. Every library service has at least one copy - request from Library Central. If I find the contact I will post - you only have to deposit 2 copies - Bodleain and BL. You get a free entry in the micro-fiche or whatever they use now.