I have just finished reading this book. As an avid fan of space exploration especially of the Soviet / Russian space programme this book makes great reading. It details how the Salyut programme was born as much out of political expediency as for scientific reasons. A point which he brings up later in discussing the aftermath of the Soyuz 11 tragedy.
The book is backed up with numerous references, primary and secondary sources. Each chaper following a logical pattern. The quality of many of the photographs isn't that great but this is acknowleged by the author and is fair enough given the age of the pictures and initial quality. However many I had never seen before on the internet or in print.
I recommend this book to anyone who wants to learn about an interesting chapter in space exploration history but which has a continuing legacy in todays ISS.