Usherwood, Peter N. R. <br/><br/>
Nervous systems 
<label>/ by </label> Usherwood, Peter N. R. 
 - London  Edward Arnold  1973 
 - v, 122p.  ill.  22 cm. 
 - The Institute of Biology's studies in Biology. No. 36 .
<br/><br/><label>ISBN: </label>0713123699 
<br/><br/><label>Dewey Class. No.: </label>591.48  / USH