. Comparative physiology of vertebrate respiration. Vertebrates -- Respiration; Physiology, Comparative. m. Hg. PERCH CO2 100 200 300 ^00 500 600 700 10 20 30 40 50 mm. Hg. 1007or 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 Hughes, G. M. (George Morgan). Cambridge, Mass. , Harvard University Press

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