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Keywords from Image Description:
Pituophis mouth page of First lesson in zoology . en Mouth of the Bullsnake Pituophis sayi tonguesheath epiglottis rima glottidis or opening of the windpipe org page First lessons in zoology adapted for use in schools th ed rev by Packard Published by Henry Holt and Company in New York Alpheus Packard Jr other versions PDold Uploaded