Hi there..
As a military aviation spotter i'm not really in to the civil types. I'm wandering about some forums with pictures etc.. and must say.. it's starting to come. The most Boeing and Airbus types become well known but the most tricky ones are the small airbusses.
Who can tell me, or show me with pictures, the most exterior differences between the A318, A319, A320 and A321.
Thanx in advance..