00281cam a22000977a 4500008004000000020001500040100001900055245006600074260003400140300000900174180718b1992   xxu||||| |||| 00| 0 eng d  a3540549684  aRudiger Pethig  aConflicts and cooperation in managing environmental resources  aBerlinbSpringer-Verlagc1992  a338p