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july, 1914 ON THE OOLOGY OF THE PYGOPODES 179 - Fig. 54. EGGS OF RED-THROATED LOON ((?aTJia slellala), NATURAL SIZE, SHOWING VARIATIONS IN SIZE AND FORM.
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july, 1914 ON THE OOLOGY OF THE PYGOPODES 179 - Fig. 54. EGGS OF RED-THROATED LOON ((?aTJia slellala), NATURAL SIZE, SHOWING VARIATIONS IN SIZE AND FORM.