During his lifetime, Marina published a number of well-known texts, including a treatise on the history and geography of Asturias, Diccionario geográfico-histórico de Asturias, and a study of principles of morality as they relate to legal policy and legislation, Principios naturales de la moral, de la política y de la legislación.
Marina also wrote diverse works on the history of Spanish law, including Ensayo histórico-crítico sobre la legislación y principales cuerpos legales de los reinos de León y Castilla especialmente sobre el código de las Siete Partidas de D. Alonso el Sabio (a study of the Siete Partidas, Spain's seven-part legal code that was followed for centuries both there and in Latin America), and a work entitled Juicio crítico de la Novísima Recopilación (Analysis of the Latest Compilation).