Ramos-Ginés, Orlando. <br/><br/>
Water balance and quantification of total phosphorus and total nitrogen loads entering and leaving the Lago de Cidra, Central Puerto Rico 
by Orlando Ramos-Ginés ; prepared in cooperation with the Puerto Rico Aqueduct and Sewer Authority ... [et al.]. 
 - San Juan, P.R.  Denver, CO  U.S. Geological Survey  Branch of Information Services [distributor]  1997. 
 - v, 28 p.  ill., maps  28 cm. 
 - Water resources investigations report  96-4222 .
<br/><br/>Includes bibliographical references (p. 28). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Water--Phosphorus content--Puerto Rico--Cidra.<br/>Eutrophication--Puerto Rico--Cidra.<br/>Water--Nitrogen content--Puerto Rico--Cidra.