000			00392nam a22001457a 4500
999			_c6659 _d6659
020			_a9812659048
082			_aCir 500 N237t 2006 c.1
245			_aNelson _bScience Perspective 1 _cMaurice De Guiseppe, . . .et al.
260			_aSingapore _bThomson Learning Asia _cc2006.
300			_a430 p.
526			_a500-599
650			_aScience.
700			_aDe Guiseppe, Maurice.
942			_2ddc _cBK