Essays Scientific, Political and Speculative, (Second Series) Spencer Herbert Innbundet / 2009 / Engelsk
Political Institutions Being Part V of the Principles of Sociology. (the Concluding Portion of Vol. Spencer, Herbert Heftet / 2009 / Engelsk
Social Statics or the Conditions Essential to Human Happiness Specified and the First of Them Dev Spencer, Herbert Heftet / 2011 / Engelsk
Essays Scientific, Political and Speculative, (Second Series) Spencer Herbert Heftet / 2009 / Engelsk
Classification of the Sciences To Which Are Added Reasons for Dissenting from the Philosophyof M. Comte Spencer, Herbert Heftet / 2018 / Engelsk
