supply of printing of safety books & forms, 1. printing and supply of t/511 authority to start from a non-signaled line book paper size a5 white paper 60 gsm pad binding should be done in one side, 100 leaves qty. 400 books. 2. printing and supply of t/509 authority to receive a train on an obstructed line book paper size a5 white paper 60 gsm pad binding should be done in one side, 100 leaves qty 400 books. s le proof to be approved before supply. , printing of safety books & forms, 1. printing and supply of t/511 authority to start from a no n-signaled line book paper size a5 white paper 60 gsm pad binding should be done in one side, 100 leaves qty. 400 books. 2. printing and supply of t/509 authority to receive a train on an obstructed line book pape r size a5 white paper 60 gsm pad binding should be done in one side, 100 leaves qty 400 books. sample p roof to be approved before supply. ]