Fix title

[LP]

Just minutes ago, I submitted this title by cutting and pasting from Amazon's listing without checking the spelling.

Formelbucher should be capitalized and have an umlauted u.

Instead of "eilften" it should read either 11. (period after the 11) or elften.

"vierzehten" should read either 14. or vierzehnten

Jahrhundert should be capitalized.

[lethe]

Fixed.

[LP]

Thanks so much for straightening out my mess, lethe. :)