Cook, O. F.  1867-1949. <br/><br/>
Dimorphic leaves of cotton and allied plants in relation to heredity. 
By O.F. Cook ... 
 - Washington,  Govt. Print. Off.,  1911. 
 - 59 p.  illus., v pl.  23 cm. 
 - United States. Dept of Agriculture. Bureau of Plant Industry. Bulletin  no. 221 .
 - Bulletin (United States. Bureau of Plant Industry) ;  no. 221. .
<br/><br/><label>LCCN: </label>agr11002159  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Leaf dimorphism.
<br/><br/><label>LC Class. No.: </label>QK1  / .U45 no. 221