A319 / A320 Original Aircraft Reference Guide United Airlines Maintenance Operations Training Manual consists of 2 illustrated Volumes. 

Volume I is tabbed: Dimensions & Areas, Air Conditioning, Autopilot, Communications, Electrical Power, Equipment Furnishings, Fire Protection, Flight Controls, Fuel, Hydraulic Power, and Ice & Rain Protection.  

Volume 2 is tabbed: Instruments & Recordings, Landing Gear, Lights, Navigation, Oxygen, Pneumatics, Water/ Waste, APU, Doors, Windows, Power Plant General, Engine General, Engine Fuel, Engine Start & Ignition, Engine  Air, Engine Control, Engine Indicating, Engine Exhaust and Engine Oil. 

Manuals are in great condition.  For the most part, only used during training classes.  A little bit of highlighting and/or notes could exist, but otherwise in great shape.

I will be selling all my manuals, so please look at my other ebay items for sale.  We do combine shipping.

Thanks,