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Licence: 
Creative Commons Licence
Description: 

<p>An atlas of Ciliated Protozoa commonly found in aerobic sewage-treatment processes. An aid to monitor treatment-plant performance.</p>
<p>by Colin R. Curds, Alan Warren, Humbert Salvad&oacute; Cabr&eacute; &amp; Dave Roberts.<br />
&nbsp;</p>

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith