7th edition. Volume 3 of 3 volumes
7th edition. Volume 2 of 3 volumes
26th edition. Volume 1 of 3 volumes
29th edition, 4 volumes
Paper prepared for the 10th World Conference of the World Futures Studies Federation (Beijing, September 1988), under the auspices of the China Association for Science and Technology
6th edition. Volume 3 of 3 volumes
6th edition. Volume 2 of 3 volumes
28th edition, 4 volumes
25th edition. Volume 1 of 3 volumes
Pages