UN COMTRADE, the United Nations Commodity Trade Statistics Database, is the largest depository of international trade data, containing well over 1.1 billion data records from over 140 countries.  This is a comprehensive database useful for economic and industry research.  Access it here. 

SRDS (Standard Rate & Data Service) is a leading provider of media data and rates, and our subscription includes the following services:

Consumer Magazine Advertising Source
Business Publication Advertising Source
Out-of-home Advertising Source
Direct Marketing List Source
Local Market Audience Analyst

These resources are used in marketing classes.  Explore by following this link.