 He published "Expedicion geografico-militar al interior y costas de Marruecos" (1885).At the beginning of 1886, Cervera was working in the photoengraving industry in Barcelona.However, in the summer of 1886, under the sponsorship of the Spanish Society of Commercial Geography ("Sociedad Española de Geografía Comercial"), Cervera, the Arabic interpreter Felipe Rizzo (1823–1908), and biologist and meteorologist Francisco Quiroga Rodríguez (1853–1894) traversed the Spanish colony of Rio de Oro, part of Spanish Sahara, where they made topographical and astronomical observations in a land whose features were barely known at the time to geographers.