The fractional answer is correct, but if you want to use integer texture coordinates (for example in a VBO) you can use the GL_TEXTURE matrix to change your texture coordinate system.
Imagine you want to use the 20x20 texel starting at 10,10, you'd use the following coordinates.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.