In his recent "The Butter Battle Book," Dr. Seuss describes the escalating warfare between neighboring countries who violently disagree over whether one should eat toast with the butter side up or the butter side down. Such petty squabbles leading to bloody consequences have a long history. In one famous book two nations go to war over whether one should crack eggs at the big end or the little end. Name the book, its author and the two nations.

All entries (one per person) must be clearly written on postcards and mailed to: Book Bag, The Washington Post, Washington, D.C. 20071, and must include complete return address and competition number. The winning entry will be the first correct answer drawn at random. Employees of The Washington Post Company and their families are not eligible to enter. Entries must be received no later than August 16. The winner's name and city of residence will be announced in the August 19 issue. A Washington Post Book World book bag will be sent to the winner.

Answer to Book Bag #584: The National Book-Award winning novel that features a recording of the Ohio State University Band and glee club is Philip Roth's Goodbye, Columbus.

Winner: Robin Heller, Philadelphia, Pa.