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Eder johnson de Area Leão pereira
Instituto Federal do Maranhão – campus Bacabal
 
Bacabal, Maranhão 65700-000
Brasil
 
eder.johnson@ifma.edu.br
 
eder.johnson@ifma.edu.br
 
 
 
 
 
JEL Areas:
Q5 : Environmental Economics: General
Q3 : Nonrenewable Resources and Conservation: General