La Escalera 

 - Río Piedras, P.R.  Publicaciones Geranisam  [1966-1973] 
 - volumes :  illustrations ;  27 cm. 
 - Frequency varies. 
 - Vol. 1, no. 1 (feb. 1966)-v. 7, no. 2 (oct. 1973). 
<br/><br/><br/>Microfilm. <br/>[Princeton, N.J.] <br/>Princeton University Library <br/>[19--]. <br/>1 microfilm reel ; 35 mm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Politics and goverment--Puerto Rico--Periodicals
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Puerto Rico--Politics and government--Periodicals.--1952-<br/>Latin America--Politics and government--Periodicals.--1948-