%0 Book Section %D 1980 %T Some how and which for practical tailored testing %A Lord, F. M., %C L. J. T. van der Kamp, W. F. Langerak and D.N.M. de Gruijter (Eds): Psychometrics for educational debates (pp. 189-206). New York: John Wiley and Sons. Computer-Assisted Instruction, Testing, and Guidance (pp. 139-183). New York: Harper and Row. %G eng