REF HC10.W827 World Resources . Statistics and narration on condition and trends in the world's natural resources and in the global economy. REF HD4826.I63 Yearbook of Labour Statistics . International Babour Office. Provides principal labour statistics for over 190 countries, areas or territories.
Most tables cover a ten year span.
Internet Sources Sources listed here are found under International Sites . Individual connections may change without notice but this list is a good starting point for valid and useful Internet Sources.