Berkowski, George How to build a billion dollar app : Discover the secrets of the most successful entrepreneurs of our time - London Little Brown 2017 - x, 469p. | Binding - Paperback | 23.5*15.4 cm ISBN: 9780349401379 Subjects--Topical Terms: NON TECHNICAL BOOKS (NTB) Dewey Class. No.: 338.7610053 / BER