technical manual Operator's Manual For Howitzer, Medium, Self-Propelled: 155-MM, M109 (2350-00-440-8811) ; 155-MM, M109A1 (2350-00-485-9662) ; 155-MM, M109A3 (2350-01-031-8851) List of research reports for sale Time : the weekly newsmagazine Air navigation attack computer : part no. FAA-160B ; FSN 6605-435-1481 (Felsenthal Instruments) 22040