000 00311nam a2200121 a 4500
005 20140414132113.0
008 110817s19uu xx 00 eng d
050 _aREF 503
_bAT1 1990
245 _aAtoms and molecules.
260 _aSingapore :
_bWorl book,
_c1990.
440 _aYoung Scientist
541 _eM6741
999 _c114834
_d114834