01086nam a2200289 i 450099100096148970753620020507104443.0940218s1981 ||| ||| | eng b10154073-39ule_instLE00639814ExLDip.to Fisicaita53(082.2)53.3.3539.7'217QC794.8International colloquium on photon-photon interactions4620974 fourth International colloquium on photon-photon interactions (1981) /edited by G. LondonSingapore :World Scientific,1981viii, 259 p. :ill. ;25 cm.Photon-photon interactionsLondon, G..b1015407321-09-0627-06-02991000961489707536LE006 53.3(042+082.2) LON12006000047463le006-E0.00-l- 00000.i1018633527-06-02Fourth International colloquium on photon-photon interactions (1981187963UNISALENTOle00601-01-94ma -engxx 21