The pages started to fall out of my paperback version too , I carefully glued them back in with pva glue and that worked perfectly
I also used clear adhesive film over the cover , its a bit tatty looking now ,but thats fine too . Mines the same cover as your's Rock so it must have been mid 90's I got it , how time flies....
Heres another favourite of mine ,
http://www.trinityamps.com/ForumGallery/trinity/resources/Jack_Darr_Handbook.pdf
Thats a great book for amp servicing tips ,and of course some extracts of it are in the Tube Amp Book too.