000			00361nam a2200145Ia 4500
999			_c238299 _d238299
008			140130s9999 xx 000 0 und d
020			_a8177223720
082			_a658.83 _bTRO
100			_aTrochim , William M.K.
245			_aResearch methods
260			_bBiztantra _aNew Delhi _c2005
300			_a363 p
650			_aResearch methods
942			_2ddc _cB