PNEUMONIAITS CARE AND PREVENTION

Copyright, 1940John Hancock Mutual Life Insurance Companyof Boston, MassachusettsL63-9-40

Copyright, 1940

John Hancock Mutual Life Insurance Companyof Boston, Massachusetts

L63-9-40

Life Conservation Serviceof theJOHN HANCOCK MUTUAL LIFEINSURANCE COMPANYof Boston, Massachusetts


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