Heath, O.V.S. <br/><br/>
Stomata 
O.V.S. Heath 
 - London  Osford University Press  [ 19 - ? ] 
 - 32p.:ill.;  25cm.- 
 - Oxford biology readers; no.37 .
<br/><br/><label>Dewey Class. No.: </label>581.12  / HEA