Artikel I

1. The Contracting States undertake not to apply customs duties or other charges on, or in connexion with, the importation of—
(a) Books, publications and documents, listed in annex A to this Agreement;
(b) Educational, scientific and cultural materials, listed in annexes B, C, D and E to this Agreement;
which are the products of another Contracting State, subject to the conditions laid down in those annexes.
2. The provisions of paragraph 1 of this article shall not prevent any Contracting State from levying on imported materials—
(a) Internal taxes or any other internal charges of any kind, imposed at the time of importation or subsequently, not exceeding those applied directly or indirectly to like domestic products;
(b) Fees and charges, other than customs duties, imposed by governmental authorities on, or in connexion with, importation, limited in amount to the approximate cost of the services rendered, and representing neither an indirect protection to domestic products nor a taxation of imports for revenue purposes.