The Centre Cannot Hold
The Centre Cannot Hold is a Pocket TOS eBook – the second book in the Mere Anarchy series – written by Mike W. Barr. Published by Pocket Books, it was first released in .

Summary 
From the book jacket
A few years after the disaster on Mestiko, the Payav are struggling to rebuild in the wake of the pulsar's damage. The Starship  returns with a plan to help restore the planet's atmosphere.

But the Klingon Empire has also taken an interest in Mestiko, and has come to the aid of one of the world's many factions. Captain James T. Kirk finds himself once again pitted against the Klingon commander Kor, with the fate of Mestiko at stake.

External link 
 

Centre Cannot Hold, The