Dittos on all the positive comments. I remember a copy we had in the Chief Pilot's office of our airline in the 70's and 80's (it's now on my bookshelf, BTW). Certainly a great reference for when it was needed.
The last reprint I know was December, 1977. ISBN 00 903083 01 9
Outdated? In some ways, but when in doubt learn and review the basics and you won't be short-changed.