[Resolvido] Error Number: 1066 Not unique table/alias: 'tb_descricao'

SELECT tb_descricao.nome_estab,tb_descricao.data_disp,tb_mapa.codigo_mapa 
  FROM tb_descricao 
  JOIN tb_descricao 
    ON tb_descricao.id_estab=tb_descricao.id_estab 
  JOIN tb_mapa 
    ON tb_mapa.id_mapa=tb_descricao.id_mapa 
 WHERE 
  (tb_descricao.status=‘A’ OR tb_descricao.status=‘F’) AND 
  (tb_descricao.tipo=‘v’ OR tb_descricao.tipo=‘t’ OR tb_descricao.tipo=‘e’ OR tb_descricao.tipo=‘f’);

SELECT D.nome_estab,D.data_disp,M.codigo_mapa 
  FROM tb_descricao D
  JOIN tb_mapa M
    ON M.id_mapa=D.id_mapa 
 WHERE 
  (D.status=‘A’ OR D.status=‘F’) AND 
  (D.tipo=‘v’ OR D.tipo=‘t’ OR D.tipo=‘e’ OR D.tipo=‘f’);