GA27-3345-2_X.25_Interface_for_Attaching_SNA_Nodes_to_Packet-Switched_Data_Networks_General_Information_Manual_198503.pdf
./bitsavers/pdf/ibm/sna/x25/GA27-3345-2_X.25_Interface_for_Attaching_SNA_Nodes_to_Packet-Switched_Data_Networks_General_Information_Manual_198503.pdf