000			00418nam a2200157Ia 4500
008			180712s9999 xx 000 0 und d
020			_a39107132
082			_a150.72 _bKER
100			_aKERLINGER, Fred N.
245			_aFoundations of behavioral research
250			_a3rd ed.
260			_aNewYork _bHolt, Rinehart and Winston _c1986
300			_axviii, 667 p.
650			_aSocial sciences-Research
942			_cS
999			_c16535 _d16535