D.U.M.B.S (Deep Underground Military Bases) Series | Bookhype

Book 1

Cover of Greyland

Greyland

by David Sloma

Published 13 October 2013

Book 3

Cover of Rescueplan

Rescueplan

by David Sloma

Published 29 August 2014

Book 4

Cover of Moonbase

Moonbase

by David Sloma

Published 25 November 2014

Book 6

Cover of Destroyer

Destroyer

by David Sloma

Published 30 April 2018