DATELINE: EUROPE Leonard Ross Harcourt, Brace ($2).
Two years ago, Leo Calvin Rosten, 31, Polish-born teacher, humorist, researcher, social scientist, won pseudonymous fame as Leonard Q. Ross, author of The Education of H*Y*M*A*N K*A*P*L*A*N. When that book appeared, Author Rosten was in Washington, working on a serious journalistic survey, The Washington Correspondents. Sly Author Rosten enjoyed hearing correspondents chuckle over Hyman Kaplan, ask who Leonard Q. Ross might be. Afraid they might not take his research job seriously if they knew, Author Rosten kept mum.
In Dateline: Europe he adds a split to...