English Translation of Gastronomie Pratique
There is apparently an english version however there are whole sections missing and it is poorly translated. You are far better off going with a different book or if you have the time taking up french. The Book I went with was Larousse Gastronomique which has been endorsed by Heston Blumenthal and Gordon Ramsay.

http://www.amazon.com/New-Larousse-Gastronomique-Hamlyn/dp/0600620425/ref=sr_1_3?s=books&amp;ie=UTF8&amp;qid=1302582324&amp;sr=1-3