Imperialism and the nation state in Friedrich Ratzel's political geography - Mark Bassin, 1987

References - The Eurocentric Conception of World Politics

Geopolitics - Wikipedia

PDF) Spatial Relations and the Struggle for Space Friedrich Ratzel's Impact on German Education from the Wilhelmine Empire to the Third Reich

Theory, Perspectives and Connexio Rerum (Part I) - Institutional Constructivism in Social Sciences and Law

PDF) Classical Geopolitics: A summary of key thinkers and theories from the claasical period of geopolitics

History and philosophy of geography - Thomas F. Glick, 1988

Chapter 3 Geopolitical Schools of Thought: A Concise Overview from 1890 till 2020, and beyond in: Geopolitics and International Relations

PDF) Spatial Relations and the Struggle for Space Friedrich Ratzel's Impact on German Education from the Wilhelmine Empire to the Third Reich

Can Humanity be Mapped? Adolf Bastian, Friedrich Ratzel and the Cartography of Culture – History of Anthropology Review

Sage Reference - The SAGE Handbook of Political Geography

Geopolitics - Wikipedia

Rethinking Geopolitics: Geography as an Aid to Statecraft - Texas National Security Review

Christaller's research on the geography of administrative areas - Richard E. Preston, 1992

SOLUTION: Imperialism and the nation state in friedrich ratzel s political geography - Studypool