Diagram illustrating the variation in the specific gravity of boys with inflated and empty chests. Fig.10, page 127 in "Healthy growth : a study of the relation between the mental and physical development of adolescent boys in a public day school".
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Diagram illustrating the variation in the specific gravity of boys with inflated and empty chests. Fig.10, page 127 in "Healthy growth : a study of the relation between the mental and physical development of adolescent boys in a public day school".
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