7 1 10 Twain, Mark Primary Author mixed material Oxford Oxford University Press 2008 Twain, Mark Primary Author Bullard, Nick Additional Author mixed material Oxford Oxford University Press 2008 Twain, Mark Primary Author mixed material London Harper press 2011 Twain, Mark Primary Author Bogart, Shirley Additional Author mixed material New York Baronet Books 1992 Twain, Mark Primary Author Laiken, Deidre S. Additional Author mixed material New York Baronet Books 1989 Twain, Mark Primary Author mixed material Bridlington Priory Books Twain, Mark Primary Author Cornish, F. H. Additional Author mixed material Oxford Macmaillan Heinemanna ELT 2006