Berkley Medallion Edition, March 1970, Eleventh printing.
Generally blue cover with Title and Author written in dark blue. This book is in fair condition, there is some cover wear and the front cover is beginning to come off. Binding after the first few pages is tight. Smoke-free home.
Reviews:
Debbie (Australia) (2007/08/28): One of my all time favourites - an adventure with heroes and monsters and sex appeal. I like most of Heinlein's books - the only one better than this is Friday.