Spanish geologist, mineralogist, botanist and zoologist (1851-1911)

La ciencia en el campo : Quiroga, Calderón, Bolívar : naturaleza y regeneracionismo / Santos Casado de Otaola ; prólogo de Juan Luis Arsuaga.

450 pages : illustrations, portraits ; 24 cm

Flora salvadoreña : Lista preliminar de plantas de El Salvador / por Salvador Calderón e Paul C. Stanley.

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Salvador Calderón y Arana

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Flora salvadoreña : Lista preliminar de plantas de El Salvador / por Salvador Calderón e Paul C. Stanley.

La ciencia en el campo : Quiroga, Calderón, Bolívar : naturaleza y regeneracionismo / Santos Casado de Otaola ; prólogo de Juan Luis Arsuaga.