Text ( visual ) : unmediated Evaluation of teacher merit in city school systems / by William C. Reavis and Dan H. Cooper. -- Chicago : University of Chicago , 1945. -- vi, 138 p. ; 24 cm. -- (Supplementary educational monographs / University of Chicago, Department of Education ; no. 59). -- (BB03375419) ; https://ci.nii.ac.jp/ncid/BB03375419 Author Heading(s): Reavis, William C. ; Cooper, Dan H.