00441nam a2200133Ia 4500008004100000040001700041082002800058100002000086245006700106260003600173300001200209440005900221650002700280190328s9999||||xx |||||||||||||| ||und||  aNITILcNITIL  221sta370.780973bP827E  aPopham, W James 0aEducational statisticsbuse and interpretationcW James Popham  aNew YorkbHarper and Row`c1967  ax,429p.  aExploration series in education/ed by John Guy Fowlkes  aEducational Statistics