MICHIGAN ACADEMY OF SCIENCE, ARTS & LETTERS.
Papers, 1931. Vol.16. Editors: Eugene S. McCartney & Peter Okkelberg.
MICHIGAN ACADEMY OF SCIENCE, ARTS & LETTERS. Papers, 1931. Vol.16. Editors: Eugene S. McCartney & Peter Okkelberg. © 20Apr32; A49875. University of Michigan (PCW); 25Jan60; R250821.
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