Cross ventilation of dope room | 150 Years in the Stacks

← Year 61 – 1921: The Health of the Industrial Worker by Edgar L. Collis and Major Greenwood, containing a chapter on reclamation of the disabled, by Arthur J. Collis

Cross ventilation of dope room

By Lois Beattie | Published January 26, 2012 | Full size is 900 × 725 pixels

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