Novels for further relevant reading:   MARS Ben Bova HODDER & STOUGHTON 1993 ISBN 0-450-57717-1   MOVING MARS Greg Bear LEGEND BOOKS 1993 ISBN 0099-261-219   RED MARS Kim Stanley Robinson HARPER COLLINS 1993 ISBN 0-00-224053-X   GREEN MARS Kim Stanley Robinson VOYAGER 1999 ISBN-10: 0586213902 RETURN TO MARS Ben Bova HODDER & STOUGHTON 1999 ISBN 0340-70796-8 THE MARTIAN RACE Gregory Benford ORBIT BOOKS/TIME WARNER 2000 ISBN 1-85723-999-7 BLUE MARS Kim Stanley Robinson VOYAGER 2001 ISBN-10: 0007121652