A study of homogeneous grouping in terms of individual variations and the teaching problem, by Marvin Y. Burr ...
Burr, Marvin Yard,1903-
Columbia University.Teachers College.Bureau of Publications.
New York City : Teachers College, Columbia University,
1931.
Vita.
Thesis (Ph. D.)--Columbia University, 1931.
Grading and marking (Students)
Psychological tests.
Individuality.
Ability.