Programmed learning in Extension training: Comparison of the effectiveness of pr
Marsh, C.P., Hyman, T.M.
Programmed learning in Extension training: Comparison of the effectiveness of pr - Raleigh 1964 - 1-20 p. - North Carolina Agricultural Ex .
Programmed learning in Extension training: Comparison of the effectiveness of pr - Raleigh 1964 - 1-20 p. - North Carolina Agricultural Ex .