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A blue liquid being heated by a bunsan burner in a round bottomed glass flask. Science lesson at a secondary school - Paul Carter - 10-07-2007
00055870
10-07-2007 A blue liquid being heated by a bunsan burner in a round bottomed glass flask. Science lesson at a secondary school © Paul Carter
A blue liquid being heated by a bunsan burner in a round bottomed glass flask. Science lesson at a secondary school - Paul Carter - 10-07-2007
00055869
10-07-2007 A blue liquid being heated by a bunsan burner in a round bottomed glass flask. Science lesson at a secondary school © Paul Carter
A blue liquid being heated by a bunsan burner in a round bottomed glass flask. Science lesson at a secondary school - Paul Carter - 10-07-2007
00055872
10-07-2007 A blue liquid being heated by a bunsan burner in a round bottomed glass flask. Science lesson at a secondary school © Paul Carter
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