"Distributiestrategie." . . "Vente Enseignement programmé." . . . . . "The basics of successful salesmanship : a self teaching programmed book"@en . . "The Basics of Sucessful Salesmanship : a Self-Teaching Programed Book" . . . . . . "Programmed instructional materials" . "The basics of successful salesmanship : a self-teaching programed book" . . . "The basics of successful salesmanship; a self-teaching programed book" . "The basics of successful salesmanship : a selfteaching programmed book" . . . . .