By Seel N.M.   in Instructional Science

ISSN:0020-4277|29|4-5|403-427

Springer Publishing Company ‎(2001)‎

Access to resources Favorite 19.678465

By Seel N.M.   Schenk K.   in Evaluation and Program Planning

ISSN:0149-7189|26|2|215-224

Elsevier‎(2003)‎

Access to resources Favorite 16.392912