00402nam a22001337a 4500008004100000040005500041080001600096100002400112245004000136260004600176300001600222650001500238653001500253230501b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  a54(091)bK1  aLeicester, Henry M   aHistorical background of chemistry   aNew York: bJohn Wiley & Sons Ltd, c1956  aviii, 260p.  aChemistry   aHistorical