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<dl><dd>This material has been provided by London School of Hygiene &amp; Tropical Medicine Library &amp; Archives Service. The original may be consulted at London School of Hygiene &amp; Tropical Medicine Library &amp; Archives Service</dd>
<dd>London School of Hygiene &amp; Tropical Medicine Library &amp; Archives Service</dd></dl><br>Subjects: Sanitation</div>
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<dl><dd>Spear, John</dd>
<dd>Seaton, Edward C</dd>
<dd>London School of Hygiene and Tropical Medicine</dd></dl></div>
Internet Archive identifier