ResearchSources.com
Marketing data per country: national statistics, company registers, sector organizations, export promotion institutes, publishers, international institutions, market research companies, tradefairs and many other sources.
Sources for Market Research:
Japan
Japan has 128 million inhabitants and the current GDP is 520 trillion Yen.
In total 400 market research agencies with 1.2 billion $US turnover
Most sites and publications are for Japanese users and thus only in the japanese language. Most official sites have english translations. In general it is easier to buy publication from West European or US research companies
market research companies
Veraart Research Report on food retailers in Asia
national statistical agency
national bank
companies registers
Japan Chamber of Commerce and Industry
university/ university libraries
other research sources