00273nam a2200097Ia 4500080001800000100002100018245008100039260002600120300001000146583001900156  a06.05.01 D938  aDupont, Beatrice  aUnequal education : a study of sex differences in secondary-school cirricula  bUNESCOaParisFRc1981  a88 p.  c3/7/00kM2LMGR