tbl group sphere books p/b fourth printing, with new cat#, new
cover art unsigned, uncredited, of spacewalking space-suited human tethered to spaceship broadside-on behind them, with small second spacewalking astronaut in distance
cover price 30p, 7/25 east africa, $1.00 australia, $1.00 new zealand
176p. including titles, indicia etc, 2 end pp. advertising
first sphere books edition 1968;
indicia gives printing history:
reprinted july 1968, july 1970, june 1972