00330nam a2200121Ia 4500008004100000040003800041100001300079245003500092250000600127260004500133300001600178653001400194211214s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aYoung, L 0aResonance in organic chemistry  a1  bJohn Wiely and Sons, IncaNew Yorkc1955  axii, 845 p.  aChemistry