diff --git a/lib/juridical_nature.rb b/lib/juridical_nature.rb
index f53c57d..8f3b615 100644
--- a/lib/juridical_nature.rb
+++ b/lib/juridical_nature.rb
@@ -5,4 +5,8 @@ class JuridicalNature < ActiveRecord::Base
 
   validates_presence_of :name
   validates_uniqueness_of :name
+
+  def public_institutions
+    Institution.where(:type=>"PublicInstitution", :governmental_power_id=>self.id)
+  end
 end
--
libgit2 0.21.2