Embryogenesis in angiosperms  a developmental and experimental study 
Valayamghat Raghavan. 
 - Cambridge  Cambridge Univiversity  1986 
 - xii, 303p., 24cm. 
<br/><br/><label>ISBN: </label>0-521-26771-4. 
<br/><br/><label>Dewey Class. No.: </label>582.13  / R13E