45 Revolutions (Volume 1, UK/Ireland, 1976/1979) by Mario Panciera (Hurdy Gurdy Books)
Close to 1200 pages, this is the ultimate reference guide to UK and Irish punk, new wave, powerpop, indie and whatchamightcallit 45s from the late 70s. "Insane" is the word that first comes to mind when browsing the pages of this book; 2000+ artists, 3000+ singles and 4500+ picture sleeves and label shots in full color. The skope is amazing; detailed biographies (on every band!), release dates and jaw dropping info on various pressings of discs you thought you knew all about (My Chiswick Records want list has doubled after checking the various entries!) Just get it, that's all I can say, 'cause this truly is the Encyclopedia Britannica for record geeks like me 'n you.
This baby doesn't come cheap tho', with a list price of 85 Euros, but Lost & Found seems to be the cheapest dealer offering 'em for just €60. (heck, I'd gladly pay a months' earning for a US edition!)