(1) The librarian of a prescribed library or archive may, if the prescribed conditions are complied with, make a copy from any item in the permanent collection of the library or archive for the purpose of—
(a) preserving or replacing the item by placing the copy in such permanent collection in addition to or in place of the item;
(b) replacing in the permanent collection of another prescribed library or archive an item which has been lost, destroyed or damaged,
without infringing the copyright in any literary, dramatic or musical work, in any illustrations accompanying such a work or, in the case of a published edition, in the typographical arrangement.
(2) The prescribed conditions shall include provisions restricting the making of copies to cases where it is not reasonably practicable to purchase a copy of the item in question for the purpose.