The World Of Ptavvs by Larry Niven. Paperback edition published by Sphere in 1971.

Larry Greenberg's telepathic tendencies had been trained and developed to a critical level. The trouble was that if these psychic interchanges were strong enough, a man could end up not knowing who he really was. But when Larry's mind is taken over by an alien force, he has to fight to retain his sanity - and divert a disaster that threatens all mankind.

And when Larry's mind is taken over by a sinister alien force, he has to fight to retain his sanity - and divert a disaster that threatens all mankind...

A little worn externally but good general condition. Pages yellowed but clean and securely bound. Some creasing and wear to the covers and spine. A scarce vintage copy.

Thanks for looking. If you decide to buy, please complete checkout for payment instructions.