Measurement of e gamma -> eZ/gamma*                                            
  
             The process   e gamma -> eZ/gamma* is studied                     
             in e+e- collisions with the OPAL detector at LEP                  
             at a centre of mass energy of sqrt(s) = 189 GeV.                  
             The e+e- cross-section times the                                  
             branching ratio of the Z/gamma* decaying into hadrons             
             is measured within Lorentz invariant kinematic limits.            
             The e gamma cross-section is  measured                            
             as a function of the centre-of-mass energy                        
             of  the e gamma.                                                  
             The distributions of the Mandelstam variables s, t, and u         
             are measured as e+e- event rates                                  
             and compared with the predictions from the Monte Carlo            
             generators grc4f and PYTHIA.                                      
             Further the differential e gamma cross-sections                   
             dsigma/dt and dsigma/du are measured.                             
  
 Parallel session :5                   
 Plenary  session :6a