A description of ventilators :
whereby great quantities of fresh air may with ease be conveyed into mines, goals, hospitals, which was read before the Royal Society in May, 1741 ... /
by Stephen Hales ...
|Main Creator:||Hales, Stephen, 1677-1761.|
|Published / Created:||
London : printed for W. Innys; R. Manby; and T. Woodward, 1743.
A continuation was published in 1758 with the title 'A treatise on ventilators'.
Paragraphs numbered 1-236.
Physical description: xx,172 p.,plates ; 8vo
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