asdfjk, mquran, and truth,
thank you for you responses. right, this section of the book is from publication on salah and "the correct way to perform it". although that part of the book which shows the steps of performing salah mentions that one can recite any other surah after al fatihah, it never says that the eleven surahs compiled in the back are the ones that certain Muslims usually say. and the section of the book with the eleven surahs doesn't give a reason as to why they've been compiled.
i had a feeling that they could be used after al fatihah because they were complete and short, but i wasn't sure since one of the du'a's listed as what "should" be said after as-salah 'alan nabiyy is a few lines from a larger surah (1440-41). i didn't want to assume.
okay, thanks again for your help.
peace,
k.damiana