I just stumbled across a google-book copy of Michel Debost's book "The Simple Flute from A to Z". Now you can preview it online using google books! Wowza!
This Debost text is a must have book for all flutists (and don't be fooled by the title--yes, it's about standard silver C-flutes and every hint and tip on how to solve any problems you are having at almost any level.)
so now, those who have not yet purchased this marvy book, can clearly see why it's so highly recommended:
Debost's Simple Flute from A to Z. Read it here.