Tarisa ndima iri pasi apa uye wozopindura mubvunzo unotevera mumutauro mumwe chetewo: Passage: Pakazosvika 1975, nyika dzakawanda dzakanga dzichishandisa hurongwa hweGerman zvokuti hwakagadzwa sechiyero cheISO, pamwe chete nemhando yepamutemo yeUnited Nations. Pakazosvika 1977, A4 ndiyo yaive chimiro chetsamba mu88 yenyika 148. Nhasi chiyero ichi chakatorwa nenyika dzese pasi rose kunze kweUnited States neCanada. MuMexico, Costa Rica, Colombia, Venezuela, Chile, nePhilippines, chimiro chetsamba yeUS ichiri kushandiswa zvakajairika, kunyangwe ivo vakagamuchira zviri pamutemo chiyero cheISO. Mubvunzo: ndedzipi nyika dzisina kuenda pamwe neiyo chiyero?
United States neCanada