Animals used in Richter, C.P. "Artifactual Seven-Day Cycles in Spontaneous Activity in Wild Rodents and Squirrel Monkeys," Journal of Comparative and Physiological Psychology 1976, Vol. 90, no. 6, pp. 572-582.
Logbook data converted by Hi-Tech Processing Services, Inc., Baltimore, MD
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Scanned image of a logbook page