. Ein ornithologischer Ausflug nach den Seen Saissan-nor und Marka-kul (in West-Sibirien) im Jahre 1909. Birds. ÐÑниÑологиÑеÑÐºÑ Ð-ЬÑÑникÑ, I9I2 г., кн. IV. Ornithologische Mitteilungen, 1912, в. РиÑ. 41. Ðнездо ÑеÑной воÑÐ¾Ð½Ñ (С о г v и s Ñогопе orientalis Eversm.).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Poljakov, G. I. Moscow

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbirds, bookyear1912