{HEAD ~ A gas turbine engine} 1 wherein said lands are adapted for {TAIL ~ rotation} by forming them integrally with upstream face of disc 
{ HEAD ~ A gas turbine engine } 1 wherein said lands are adapted for { TAIL ~ rotation } by forming them integrally with upstream face of disc
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH