00302nam a2200109Ia 450000500170000008000180001710000210003524500810005626000260013730000100016358300190017320260716043020.0  a06.05.01 D938  aDupont, Beatrice  aUnequal education : a study of sex differences in secondary-school cirricula  bUNESCOaParisFRc1981  a88 p.  c3/7/00kM2LMGR