supply of authority to pass signals in on or defective positionauthority to pass signals in on or defective position,authority to pass signals in on or defective position, in the form of books with normal binding. e ach book will consists of 50 sets and each sets consists of 02 copies with same sr. no. printing to be done on both sides of a set as per sample. size a-4, 58 gsm, c/w, form no. t/369(3b), numbering will be provided afte r artwork approval. cover: brown with label with sticker of description. cover brown with label with sticker of de scription. [ warranty period: 30 months after the date of delivery ]