Essentials of educational measurement /
Ebel, Robert L.
Essentials of educational measurement / Robert L. Ebel, David A. Frisbie. - 5th ed. - Englewood Cliffs, N.J. : Prentice Hall, c1991. - xii, 370 p. : ill. ; 24 cm.
Essentials of educational measurement / Robert L. Ebel, David A. Frisbie. - 5th ed. - Englewood Cliffs, N.J. : Prentice Hall, c1991. - xii, 370 p. : ill. ; 24 cm.