References
- Lewis . 1971a . “Course production at the Open University I: some basic problems,” . British Journal of Educational Technology , 4 ( 1 )
- Lewis , B. 1971b . “Course production at the Open University II: activities and activity networks,” . British Journal of Educational Technology , 4 ( 2 )
- Lewis , B. 1971c . “Course production at the Open University III: planning and scheduling,” . British Journal of Educational Technology , 4 ( 3 )
- Lewis , B. 1972 . “Course production at the Open University IV: the problem of assessment,” . British Journal of Educational Technology , 4 ( 2 )