SPECULAR REFLECTANCE STUDY OP CATALYTIC EFFECTS OF MONOLAYER OF LEAD ON OXIDATION OF FORMIC ACID ON PLATINUM ELECTRODE R. R. ADŽIj and M. M. PODLAVICKY J. Phys. Colloques, 38 C5 (1977) C5-193-C5-199 DOI: 10.1051/jphyscol:1977525