From the back cover of Bantam paperback December 1990:
THE RAMANS ARE BACK...
Years ago, the enormous, enigmatic alien spacecraft called Rama sailed trough our solar system as mind-boggling proof that life existed -- or had existed -- elsewhere in the universe. Now, at the dawn of the twenty-third century, another ship is discovered hurtling toward us. A crew of Earth's best and brightest minds is assembled to rendezvous with the massive vessel. They are armed with everything we know about Raman technology and culture. But nothing can …