If you prefer another language then English you can use here the automatic translations based on Googles translate-function.
Translations are not perfect but it is better with this kind of translation then nothing.
Some of pages on this site - mainly tables with image-presentations - can be deformed in translation-procedure.
Sorry for that but you can check images in the English, original, version of this site - and use translation-function
only for better understanding of the texts.
Send mail to firstname.lastname@example.org with questions or comments about this web site.