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| Topic | Replies | Created | Last reply  | |
|---|---|---|---|---|
 | Money | 2 | 1 year 49 weeks ago by zippy | 1 year 49 weeks ago by Michael Ben-Eli |
 | Earth as a closed system | 7 | 2 years 2 weeks ago by joshua | 2 years 1 week ago by Michael Ben-Eli |
| comments on Economic Domain Premise | 0 | 2 years 2 weeks ago by elizabeth | n/a |
