Dragon's Egg by Robert L. Forward
Dragon's Egg by Robert L. Forward (New English Library / first paperback edition, Aug 1981)
'In a moving story of sacrifice and triumph, human scientists establish a relationship with intelligent lifeforms-the cheela-living on Dragon's Egg, a neutron star where one Earth hour is equivalent to hundreds of their years. The cheela culturally evolve from savagery to the discovery of science, and for a brief time, men are their diligent teachers.'
Paperback. Soft crease down spine indicates that book has been carefully read and a little creasing of outer corners of front and back covers, but otherwise Good+ condition.