By Madrid, Lelia..
Madrid Pliegos 1987 .
183 p. 20 cm..
8486214238

By Salinas, Pedro.
Baltimore The Johns Hopkins press 1940 .
ix, 165 p. , "The English text of these lectures is by Edith Fishtine Helman."

By Miñana, Rogelio..
Newark, Del. Juan de la Cuesta 2002 .
226 p. 23 cm..
1588710076

By Miñana, Rogelio..
Newark, Del. Juan de la Cuesta 2006 .
226 p. 23 cm..
1588710076

By Ciarlo, Héctor Oscar..
Río Piedras, P.R. : Editorial de la Universidad de Puerto Rico, 1982 .
170 p. 21 cm..
0847728242