Interlopers (Ace Science Fiction) in Mass Market Paperback format by Foster, Alan Dean. Published by Ace in 2001. Available in Used - Very Good condition.
Alan Dean Foster is an American author of fantasy and science fiction. He currently resides in Prescott, Arizona, with his wife, and is also known for his novelizations of film scripts. He holds a bachelor's degree in political science and a MFA from the University of California, Los Angeles. ([Source][1])
[1]: http://en.wikipedia.org/wiki/Alan_Dean_Foster
