David S. Pena

Personal Relations Between Librarians and Readers

David S. Pena, Samuel S. Green, Samuel S. Green, 2006 .

The Six Essential Components of Sustainable Socialism: From Building the Productive Forces to Combating Bourgeois Liberalization

David S. Pena, 2014 .

21st-Century Socialism and the Four Components of Sustainability

David S. Pena, 2010 .