instrument
...
Prisoners of war shall be allowed to
receive by
post or by any other means
individual parcels or
collective shipments containing, in particular, foodstuffs,
clothing,
medical supplies and articles of a
religious,
educational or
recreational character which may
meet their needs,
including books,
devotional articles,
scientific equipment,
examination papers,
musical instruments,
sports outfits and
materials allowing
prisoners of war to pursue their
studies or their
cultural activities. ...