"Principles Of Compiler Design" answers to questions

Hi,

I have recently bought the old/green dragon book "Principles Of
Compiler Design" (1977) - although mine appears to be pink! It has
questions at the end of every chapter, but doesn't obviously have any
answers to those questions anywhere. Does anyone know where I can
find the answers to the questions in this book.

Cheers,
Steve.
[You have the semiantique first edition. People have asked for
answer sheets several times over the years, but none have ever
turned up. -John]