Electronic Resource
Kilpatrick, Jeremy
;
King, Edmund
;
Ferran, Pierre
;
[et al.]
Hans, Nicolas
;
Passow, A. Harry
;
Kemelfield, Graeme
;
Ashby, Eric
;
Blaug, Mark
;
Parker, Franklin
;
Walz, F.
;
Borinski, Fritz
;
Farnen, Russell F.
;
Lawson, Robert F.
;
Magdeburg, Horst
;
Havighurst, Robert J.
;
Walker, David A.
;
... and further 6
Springer
International review of education
15 (1969), S. 83-120