Douglas, David C. . The Norman Achievement 1050- 1100 / Textual Documents David C.Douglas. - 1st ed. / - London : Eyre & spottiswoode , 1969. - 271p. : ill ; 22cm . Subjects--Index Terms: History-England Norman Achievement-1050- 1100 G-History Dewey Class. No.: 942.01 / D 745 N