000			00285nam a22001217a 4500
999			_c1904 _d1904
020			_a0582685559
082			_a500 _bHEF
100			_aHeffernan.D.A
245			_aThe World of Science _cHeffernan.D.A
260			_aAustralia _bLongman Cheshire Pty Ltd _c1987
300			_a283p.
942			_cL