000			00301nam a2200109Ia 4500
001			112330
008			170722s9999 xx 000 0 und d
100			_aHuman, Herbert H.
245			_aSecondary analysis of sample surveys _bPrinciples proceedures and potentialities /
260			_c1972.
942			_cGEN
999			_c87142 _d87142