supply of printing items , authority to proceed for relief engine/train into an automatic block signallin g section. books of 100 x 2 foils. size 8.5 x 11 inches. print in red ink on both sides. paper to be used is maplitho 75 gsm for text kraft paper 150 gsm for cover.limp bound with 3 stitche d on left hand side, serially numbered. d.note no.t/c 912 [ warranty period: 30 months after the date of delivery ] ] , authority to proceed on automatic block system during prolong failure of sig nals. books of 100 x 2 foils. size 8.5 x 11 inches. print in red & black ink on both sides. paper to be used is maplitho 60 gsm for text kraft paper 130 gsm for cover.limp bound with 3 stitc hed onf left hand side. d.note no.t/b 912 [ warranty period: 30 months after the date of delivery ] ] , printing and binding of t/d 912 is the authority for working of trains during prolonged signal f ailure in automatic block system books of 8.5 x 11 railway watermark. paper to be used is maplitho 75 gs m for text kraft paper 150 gsm for cover. serially numbered on each foil. perforation to tear off the pages li mp bound with drawn on cover with 3 wires stitched on left hand side with gathering serially numberedfoils, a4size, print in red ink on both sides and red color indian. [ warranty period: 30 months after the date of delivery ] ]