000			00321nam a2200133Ia 4500
082			_a300.72 _bBLO
245			_aBlock 3A-research design
260			_aMilton Keynes: _bThe Open University, _c1979.
300			_b111p.
500			_aPB
546			_aEng
650			_aSocial science-Research-Methodology _952131
942			_cBK
999			_c5323 _d5323