Sci-fi writer known for his Cities in Flight series and his Star Trek novels with 17-Across (2 wds.) — Crossword Clue

What is the answer to the crossword clue „Sci-fi writer known for his Cities in Flight series and his Star Trek novels with 17-Across (2 wds.)“. We have found 1 Answers for: „Sci-fi writer known for his Cities in Flight series and his Star Trek novels with 17-Across (2 wds.)“. Try to find some letters, so you can find your solution more easily.