00331nam a2200109Ia 4500008004100000020001800041040002900059050002100088100001100109245006600120260003500186221216s9999||||xx |||||||||||||| ||und||  a92-3-101525-7  cChuka University Library  aHD 75 b.U5 1977  aUNESCO 0aThinking ahead UNESCO and the challeges of today and tomorrow  aUnited nation co;bParisc1977