Carl A. Pearson.
A Test of general proficiency in the field of natural sciences. Form Y. (Cooperative general achievement tests, revised series, 2)
R613379. A Test of general proficiency in the field of natural sciences. Form Y. By Carl A. Pearson. (Cooperative general achievement tests, revised series, 2) © 15Aug48; AA102113. Educational Testing Service (PWH); 5Sep75; R613379.
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