Erlinda L. Leones <br/><br/>
A study on the biology of an anquatic weed hydrilla verticcillata (L.F. Royle.) / 
Erlinda L.Leones 
 - 3 microfische ;  11 X 15 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aquatic weeds--Ecology.