Donald Alexander Johansen <br/><br/>
Plant embryology : Embryogeny of the spermatophyta 

 - Mass  Chronica Botanica Comany Publishers  1950 
 - 305p 
<br/><br/>Donald Alexander Johansen: Plant embryology : Embryogeny of the spermatophyta.  Mass.  Chronica Botanica Comany Publishers, 1950.--(581.33JOH)   
<br/><br/><br/>ENGLISH 
<br/><br/><label>Dewey Class. No.: </label>581.33  / JOH