000			00309nam a2200133Ia 4500
008			150522s1991||||xx |||||||||||||| ||und||
020			_a8.17036e+009
082			_a362.509591 _bSCH
245			_aThree deltas
250			_a-
260			_aNew Delhi _b Sage Publications _c1991
300			_a344 p.
942			_cC
999			_c29892 _d29892