"Mathematics Problems, exercises, etc." . . . . . . . "Refresher in basic maths"@en . . "Refresher in basic mathematics"@en . "Refresher in basic mathematics" . "A refresher in basic mathematics"@en . . "A refresher in basic mathematics" . . . . . "Includes mini disc containing interactive mathematics problems." . . . . . . . . . . . "Problems and exercises"@en . "Problems and exercises" . . . . "Mathematics." . . "Mathématiques Problèmes et exercices." . . "Since 1961" . . . .