Labor realizada por la unidad de hospital centros de salud. 

 - [San Juan]  1968. 
 - 1 v. (unpaged) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Community health services--statistics.--Puerto Rico<br/>Hospitals--statistics.--Puerto Rico
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Puerto Rico
<br/><br/><label>National Library of Medicine Call No.: </label>WX 16  / P977L 1968