procurement of books of 50 leaves ruled., books of 50 leaves ruled, size: 20.5 x33cm. printed eastern railway in hindi & english as under: 1 ) paper to be used: white printing of 60 gsm as per is no.1848 / 91. 2 ) cover: pulp board of 275gsm of white colour as per is no.4664 / 86. 3 ) binding: quarter bound cut flash. 4 ) cover ptg: matter to be collected from amps / er / hwh.5 ) the supplier has to print his firms name & p.o.no. on the cover. 6 ) section sewing using two tapes in two places at spine.7 ) one sample for binding, finishing & printing to be got approved by consignee before bulk supply. ( all iss nos. are with latest amendments ) . [ warranty period: 30 months after the date of delivery ]