What happens when I yawn?

Introduces yawning, discussing the causes and actions involved in the reflex.

9780329985608
book
Lexile: 
790
Non-Conforming

Holdings

hidmidmiidnidwidlocation_codelocationbarcodecallnumdeweycreatedupdated
31616506594345156767197758528616270T 1699360612.8 SCH612.816407292551640729255
336348867508071585671977585286Montessori522T 5384094612.8 SCH612.816407292551640729255