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Erziehung in USA : Formen, Ziele, Wandlungen, Probleme
(1961)
The dynamics of educational change
Johnson, Donald W., (1968)
Pädagogische Forschung in England
Pidgeon, Douglas A., (1963)
Continuous sampling plans
Bowker, Albert H., (1956)
A representation of Hotelling's T2 and Anderson's calssification statistic W in terms of simple statistics
Bowker, Albert H., (1961)
Sampling Inspection by variables : Albert H. Bowker, Henry P. Goode
Bowker, Albert H., (1952)