00448    a2200157   4500001000700000003000400007005001700011008004100028020001800069082001700087245007500104260004400179300001000223700002700233700003000260133050OSt20220405144741.0                                          a9780198570509  a363.34bB65G1 aGlobal catastrophic riskscedited by Nick Bostrom and Milan M Cirkovic  aNew YorkbOxford University Pressc2008  a554p.  aBostrom, Nick eEditor  aCirkovic, Milan MeEditor