Note 7 — Products of Industry
Reading edition
Blair and Robertson, The Philippine Islands, Vol. II, pp. 116, 207; Vol. III, pp. 203, 270; Vol. IV, p. 98; Vol. V, p. 145; Vol. VIII, p. 84; Vol. XII, p. 187; Vol. XVI, p. 106. Zuniga, Estadismo (Retana's edition), Vol. II, pp. 41, 94.