00492cam a22001457a 4500008004000000020001500040082001500055100002300070245009000093260005300183300001000236440003100246650004300277700002600320180718b1992   xxu||||| |||| 00| 0 eng d  a8170891698  aY4x54 G862  aGregersen, Hans M.  aEconomic analysis of forestry projectscby Hans M. Gregersen and Arnoldo H. Contreras  aDehra DunbInternational Book Distributorsc1992  a193p.  aFAO Forestry Paper, No. 17  aForest and forestry - Economic aspects  aContreras, Arnoldo H.