The construction of educational buildings has been given special attention by the general conference of U.N.E.S.C.O. at several sessions. Resolution 1. 221, passed at the 13th session, reads as follows: ‘Member States are invited to develop educational building programmes to meet their needs as part of their overall economic and social development, and in particular to establish, where appropriate, national educational building centres, and to ensure close co-operation between national and appropriate regional centres in matters relating to the development of techniques and procedures concerning educational buildings.’