00349nam a2200145Ia 450000500170000000800410001708200140005810000160007224500400008826000280012830000090015665000140016594200070017999900170018620240821151611.0240821s9999||||xx |||||||||||||| ||und||  a547.4 BON  aBonks, R.E. 0aFluorocarbons and their derivatives  aLondonbOldbournec1964  a161p  aChemistry  cBK  c34396d34396