DEADLINE FOR TOLLS ON 13 BRIDGES IS SET
Fed Judge Kevin T Duffy sets timetable for transportation-control plan to reduce air pollution in NYC, ruling that tolls must be placed on East and Harlem River bridges by Aug 31 '78; says tolls must at least equal those on present bridges and revenues must be used to subsidize or otherwise improve mass transit; Queens Boro Pres Manes scores tolls; environmentalist attys Ross Sandler and David Schoenbrod comment (M)