The 1997 Mega Rare USA 250 Millions Listings Deluxe on 11 CD ROMs by ACXIOM CO is a comprehensive database containing millions of listings from the USA and Canada. This unique product is in CD ROM format and includes listings in English language. With a license category for academic/education use, this software is compatible with various operating systems such as Universal, Windows, and Mac. This set is ideal for researchers, students, and professionals looking to access a vast amount of information from the United States and Canada.