System Dynamics Society
| • | SYSTEM DYNAMICS SOCIETY. INTERNATIONAL CONFERENCE. 24TH 2006. (6 VOLS) Held 23-27 July 2006, Nijmegen, The Netherlands. $243.00 |
| • | SYSTEM DYNAMICS SOCIETY. INTERNATIONAL CONFERENCE. 25TH 2007. (8 VOLS) Held 29 July - 2 August 2007, Boston, Massachusetts. $250.00 |
