Manufactura de puertas y ventanas... = Manufacture of doors and windows..., 19- . 

 - [San Juan, P.R.]  División de Análisis de Salarios y Estudios Ocupacionales...  19- . 
 - v.  tables. 
<br/><br/> Included appendices and explanatory notes.  Part of text in English. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Doors.<br/>Windows<br/>Building
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Puerto Rico--Doors--Windows.