000			00368nam a2200121Ia 4500
008			191206s9999 xx 000 0 und d
090			_aHV9068H55
245		0	_aPrinciples of survey analysis (formerly titled Delinquency research)
260			_aFree Press
260			_cc[1973]
300			_a"xviii, 280 p. 21 cm."
999			_c16742 _d16742