The developmental stage at which the int
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Hegre, Erling S.
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Article
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1946
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John Wiley and Sons
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English
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and the M&oal College of Virginia, Richmond1 ONE TEST FIGURE A N D ONE PLATE (FOUR FI0UB.ES) \* All operations were performed under a dissecting microscope equipped with an auxillary focusing device (Hegre and Blount, '45) which left both hands free to carry out the procedure.