Can the United States maintain its edge in environmentally critical technologies? Forum Pages: 172 - 180
A global crisis: Energy in the future W. S. FyfeM. A. PowellB. Ratanasthien Articles Pages: 187 - 196
Fossil fuels and other energy resources in the 21st century P-H. BourrelierX. Boy de la Tour Articles Pages: 207 - 225
Phosphate rock demand into the next century: Impact on wolld food supply James R. HerringRichard J. Fantel Articles Pages: 226 - 246