lK''گٹْ;'‰Nْ;|ٹ4zےےں+گٹA<'ےےں+8€ïïç*ٌ·T(27 Dec 1999 09:55ibbbobscountryfather1sonin%8.0g%13.0g%15.0g%15.0gcountryclassclassObserved cell frequenciesUICountry cell frequenciesUIFather's occupational classUISon's occupational classssUI¶YûV+#‡m,LڑعUIعدًe8پK‏l„خ3+@z¸‌¤}>W«ٹ»'<=`؟‎·ـ‎‏B|%؟ 4 †/Eaclass1",UpNonManualLowNonManualUpManualLowManualFarm<countryUnited StatesBritainJapan