O le a le CAS? O le CAS o loʻo tu mo le Chemical Abstracts Service, o se faʻamaumauga faʻamaonia na faʻatūina e le American Chemical Society (ACS.) O le numera CAS, poʻo le numera resitala o le CAS, o se faʻamatalaga numera tulaga ese e faʻaaogaina e faʻailoga ai vailaʻau vailaʻau, tuufaatasiga, faʻasologa o meaola, polymers, ma isi mea. . I le kemisi...
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