Holman,R. M. and Wilfred W. Robbins <br/><br/>
A textbook of general botany for colleges and Universities 

 - John Wiley &Sons  New York  1934 
<br/><br/><label>ISBN: </label>92-5-101445-0 
<br/><br/><label>LC Class. No.: </label>QK 641   / H6 1934