00512nam a22001572  4500001001100000005001700011008004100028040001500069050002000084100003100104245010400135260003200239300001700271650003300288700003300321000000474120151217151940.0070529s        xx            000 0 eng d  aKABUcKABU 0aS944.5b.P78D591 aDixon, John A.@000015549710aEconomics of protected areas :ba new look at benefits and costs /cJohn A. Dixon, Paul B. Sherman.  aLondon :bEarthscan,c1990.  axvii, 234 p. 0aProtected areas.@00001554981 aSherman, Paul S.@0000155499