Bibliografia

• http://lib.hpublication.com/publication/9540341f/
• http://www.trademap.org/Index.aspx?lang=es
• http://www.siicex.gob.pe
• https://www.google.com.pe/search?q=pavimentadora+con+embalaje&tbm=isch&ei=SaStU7XFH9XTsATyz4CwCQ#q=buque+de+carga+rodante&tbm=isch&imgdii=_