title: Programmed instruction in medical education. Comparison of teaching-machine and programmed textbook.
mesh_terms: D001877:Books; D004501:Education, Medical; D004521:Educational Measurement; D004562:Electrocardiography; D006801:Humans; D008722:Methods; D011380:Programmed Instructions as Topic; D013337:Students, Medical; D013663:Teaching; D006113:United Kingdom