78/ 903 [Africa]. Mantero, F. Manual Labour in S. Thomé and Principe. Translated fromt the Portuguese. Lisbon, Annuario Commercial, 1910, 183,(9)p., 2 fold. (col.) maps, num. (mainly photogr.) plates (3x fold.), 11 tables/ charts, orig. wr., large 4to.

- Both wrappers sl. creased in lower outer corner; top of spine sl. worn.

= With AUTOGRAPH SIGNED DEDICATION on verso of title-p. "To His Excellency the British Minister Resident at Munich (...) Lisbon, September 1910". Written in response to W. Cadbury's "The Labourers of S. Thome & Principe" (1909 ), in which the Portuguese cocao plantation owners of Sao Tomé were accused of slavery practices.