id author title date pages extension mime words sentence flesch summary cache txt crl-12542 Kuo, Frank F. A Comparison of Six Versions of Science Library Instructions 1973-07-01 4 .pdf application/pdf 1803 111 63 The fact that students in Group A V had op- portunities to ask questions of the li- brarian and vice versa may account for the success of this treatment. University students were ran- domly assigned to treatment groups, received verbal instruction with/ without supplementary visual illustrations and readings. cache/crl-12542.pdf txt/crl-12542.txt