| Size | Date | Filename |
|---|---|---|
| 18K | May 2 09:42 | opportunity-cost-12 |
| 15K | Apr 23 12:37 | opportunity-cost-11 |
| 13K | Apr 17 11:09 | opportunity-cost-10 |
| 17K | Apr 8 12:47 | opportunity-cost-9 |
| 23K | Jun 12 2006 | opportunity-cost-8 |
| 22K | Apr 6 2006 | opportunity-cost-7 |
| 20K | Feb 20 2006 | opportunity-cost-6 |
| 12K | Feb 17 2006 | opportunity-cost-5 |
| 13K | Feb 15 2006 | opportunity-cost-4 |
| 23K | Feb 13 2006 | opportunity-cost-3 |
| 14K | Feb 10 2006 | opportunity-cost-2 |
| 11K | Feb 7 2006 | opportunity-cost-1 |
| 28K | Feb 3 2006 | bonding-energy-9 |
| 18K | Feb 1 2006 | bonding-energy-8 |
| 20K | Jan 30 2006 | bonding-energy-7 |
| 16K | Jan 21 2006 | bonding-energy-6 |
| 20K | Jan 19 2006 | bonding-energy-5 |
| 24K | Jan 17 2006 | bonding-energy-4 |
| 18K | Jan 17 2006 | bonding-energy-3 |
| 11K | Jan 13 2006 | bonding-energy-2 |
| 16K | Jan 11 2006 | bonding-energy-1 |
| Dir | Nov 8 2005 | bonding-energy-original/ |