"0, . "
"unesco list of documents and publications 1972-1976 :annotat: ed list,personal name index,conference index/ " - 1 ed. - france : unesco 1979. - ", 873p.; 30 cm."
92-3-101607-5
--
011. 52 une (ref)
"unesco list of documents and publications 1972-1976 :annotat: ed list,personal name index,conference index/ " - 1 ed. - france : unesco 1979. - ", 873p.; 30 cm."
92-3-101607-5
--
011. 52 une (ref)