Spangenburg , Roy. The History of Science From 1895 To 1945: On the shoulders of gaints/ Ray Spangenburg. - New Dellhi : Universities Press Ltd, c1994. - xvi, 176 p. : ill, ; 22 cm. ISBN: 81 7371 192 5 Subjects--Topical Terms: Science.Science - History, 1895 - 1945. Dewey Class. No.: 509