Note 23 — PART II
Reading edition
See Descripcion Geografica y Topografica de la Ysla de Luzon, Por Don Yldefonso de Arragon, Parte IV. Prov. de la Pampanga, p. 3, 5, &c. The author is a colonel of engineers. [In 1818–20, he was chief of the topographical bureau at Manila.—Eds.] ↑