But such efforts can fail to uncover some dangers: At least two garment factories at Rana Plaza had passed international labor and safety standard audits under a European trade organization which addressed specific safety concerns at the factories but didn't assess the stability of the building that housed them.

WSJ: Bangladesh Factory Lacked Building Permits, Officials Say

It also adopts international standard-setting instruments in the fields of competence of the Organization.

UNESCO: MEDIA SERVICES