MASTER OF SPACE BY ARTHUR C. CLARKE AND PUBLISHED BY LANCER BOOKS IN 1961 AS THE FIRST PAPERBACK #72-610. (FORMERLY PUBLISHED AS PRELUDE TO SPACE).   BOOK IS IN VERY GOOD TO FINE CONDITION WITH COVER GLOSS, EDGE WEAR/RUBBING, POSTAGE $3.00 IN THE UNITED STATES AND BY ARRANGEMENT OVERSEAS.  PAYMENT CAN BE MADE BY PAYPAL.......GOOD LUCK!