I do know that a book called Takemusu Aiki was dictated by O'Sensei and then checked by him personally. It may be more accurate. A translation is on the aikidoonline web site.
I take it you mean the book edited by Hideo Takahashi. Can you be more specific about this? (1) As far as I know, the only translation is of some sections by Stanley Pranin; (2) I have checked the Aikido on Line website and Takemusu Aiki does not appear among the translated material.