00534    a2200181   4500001000700000003000400007005001700011008004100028020001800069082001400087100002700101245009300128250001200221260005400233300001000287653002800297700002700325067568OSt20211215155601.0                                          a9780750675710  a542bA54P1 aArmarego, Wilfred L.F.1 aPurification of laboratory chemicalscby Wilfred L.F. Armarego and Christina Li Lin Chai  a5th ed.  aAmsterdambButterworth- Heinemann/ Elsevierc2003  a608p.  aChemicals--Purification  aChai, Christina Li Lin