Alfvň, Hannes, 1908-1995. Living on the third planet [by] Hannes and Kerstin Alfvň. Translated by Eric Johnson.

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Alfvň, Hannes, 1908-1995.

Living on the third planet [by] Hannes and Kerstin Alfvň. Translated by Eric Johnson.

Social history -- 20th century.

Civilization, Modern -- 20th century.

Technology and civilization.

Alfvň, Kerstin, 1910- author.