Contributions from the Gray Herbarium of Harvard University 

 - Cambridge, Mass. :  Gray Herbarium of Harvard University,  192?-. 
 - v. 
 - Irregular 
 - n.179,1956. 
<br/><br/><label>LCCN: </label>81541 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Herbarios--Publicaciones periódicas.