Spratt, E. R.  Spratt, A. V.  <br/><br/>
General science :  Biology  / 
by E. R. Spratt and A. V. Spratt 
 - London :  University Tutorial Press ,  1948 . 
 - 216 p.  Paper Back 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology<br/>Carbon cycle<br/>Petunia plant
<br/><br/><label>Dewey Class. No.: </label>570  / SPR-G