Some of his earlier works were strictly geographical ( such as teaching films ) , others such as communism and humanity . Some of his earlier works were strictly geographical ( such as educational films ) ; others , such as Communism and Humanity .
Beberapa karya-karya terdahulunya adalah secara geografi (seperti filem pengajaran), yang lain seperti komunisme dan kemanusiaan. Beberapa karya-karya terdahulunya adalah secara geografi (seperti filem pendidikan); yang lain, seperti Komunisme dan Kemanusiaan.