By Colón Robles, Elías I..
San Juan, P. R. Comité Historia de los Pueblos 1985 .
66 p. , Cover title.

By Sánchez Babilonia, Rubén.
San Juan, P. R. Comité Historia de los Pueblos 1986 .
66 [5] p. , Cover title.

Puerto Rico Estado Libre Asociado de Puerto Rico 1972 .
90 p.

By Nieves Mendez, Antonio..
Aguada, PR Editorial Aymaco 2004 .
218 p. 22 cm..

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maps , map photoinspected 19_, no major culture or drainage changes observed | Revisions sown in purple compiled from aerial photographs | Includes quadrangel location map | Relief shown by contours and spot heights 69 x 56cm.

.
maps , map photoinspected 19_, no major culture or drainage changes observed | Revisions sown in purple compiled from aerial photographs | Includes quadrangel location map | Relief shown by contours and spot heights 69 x 56cm.