Thompson, Alan E..
Understanding Futurology: An Introduction to Futures study / - 1st ed / - Vermont 05053 : David & Charles Inc. , 1989 - p96 :
0-7153-7761-2
Forecasting
8u6:g / L9
Understanding Futurology: An Introduction to Futures study / - 1st ed / - Vermont 05053 : David & Charles Inc. , 1989 - p96 :
0-7153-7761-2
Forecasting
8u6:g / L9