00381    a2200121   4500020001500000082001500015245007300030260005100103300001900154650003300173650002000206650003300226  a0309042585  a333.7bPRO  aProceedings of the conference on common property resource management  aWashingtonbNational Academy Pressc1985g1987  axi,631p.c23cm  aEconomics of land and energy  aSocial sciences  aNatural resources and energy