"Waarschijnlijkheidstheorie." . . "Programmed instructional materials"@en . "Programmed instructional materials" . . . . . . . "Introduction to probability : a programed unit in modern mathematics" . . . . . . "Introduction to probability; a programmed unit in modern mathematics" . "Introduction to probability; a programmed unit in modern mathematics"@en . . . . . . . . "Introduction to probability : a programmed unit in modern mathematics" . "Introduction to probability : a programmed unit in modern mathematics"@en . . . . "Introduction to probability a programmed unit in modern mathematics" . "Introduction to probability"@en . . . . . . . . . . "Introduction to probability : a programmed unit im modern mathematics" . "Probabilities Programmed instruction." . . . . "Probabilities." . . "Probabilités." . . "Probabilités Enseignement programmé" . .