Library Journals LLC
English Language Bibliography 1945 to the Present (ELB) provides one-stop shopping for your bibliographic needs on post-World War U publishing in the English language. ELB provides quick access to a Listing of approximately 7.5 million English-language titles dating from when Gutenberg revved up his press to last week's best seller. Specifically, it claims to include comprehensively all titles in English published in any country since 1945. It is updated weekly.
McKeigue, E. "English Language Bibliography 1945 to the present." (Review) Library Journal 1 April 2003.