Tabien Baan" It is the Thai registration house book. Blue for Thai citizens and yellow for foreigners. It is a well known document for the Thai people. I finally got mine today... It took lot of paperwork and some headache. I had to go 4 times to Bangkok, 2 times to the US embassy (the bunker), one time to the Thai ministry of foreign affairs, one visit to the Thai Immigration and 6 trips to the local city hall...