"mager, robert f. "
Developing attitude toward learning: / Robert.F. Mager - 2 ed. - u.s.a. : david s lake 1984. - "ix, 116p.; 23 cm."
0-8224-4337-6
LB1084 / .M34 1968
Developing attitude toward learning: / Robert.F. Mager - 2 ed. - u.s.a. : david s lake 1984. - "ix, 116p.; 23 cm."
0-8224-4337-6
LB1084 / .M34 1968