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Confusion matrix analysis for form perception.
Engstrand RD, Moeller G. Engstrand RD, et al. Hum Factors. 1967 Oct;9(5):439-46. doi: 10.1177/001872086700900507. Hum Factors. 1967. PMID: 5582459 No abstract available.
A small animal centrifuge.
HOLLIS JH, ENGSTRAND RD. HOLLIS JH, et al. Among authors: engstrand rd. Am J Psychol. 1958 Sep;71(3):602-3. Am J Psychol. 1958. PMID: 13571469 No abstract available.