Tender For corrigendum : addition alteration and improvement of lt distribution system at dipr addition alteration in room for x ray irradiator behind nmr building at inmas and provision of patrolling path from probyn road to najafgarh drain under ge i rnd delhi - addition/alteration and improvement of lt distribution system at dipr, addition/alteration in room for x-ray irradiator behind nmr building at inmas and provision of patrolling path from probyn road to najafgarh drain under under ge(i) r&d delhi