Derek Allan Holton1941 · 10 obras en el catálogoObrasAA first step to Mathematical Olympiad problemsA first step to Mathematical Olympiad problemsProblem solvingGGeometry 1Geometry 1IIMO problems 1IMO problems 1IIMO problems 2IMO problems 2IInequalitiesInequalitiesNNumber theoryNumber theoryThe Petersen graphPProblems and how to solve themProblems and how to solve themPProofProof