Heiser, Charles <br/><br/>
The origin of Helianthus multiflorus 

<br/><br/> <<<<<<Donation Engel>>>>>> 
<br/><br/>bibliogr. p. 865 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botanique<br/>Flore<br/>Helionthus<br/>Origine<br/>Etude expérimentale