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The Douglas theory; a reply to Mr. J.A. Hobson
- "The Douglas theory; a reply to Mr. J.A. Hobson"@en
- "The Douglas theory, a reply to Mr. J.A. Hobson"@en
- "The Douglas theory : a reply to Mr. J.A. Hobson"
- "The Douglas Theory. A reply to Mr. J.A. Hobson"@en
- "The Douglas theory : a reply to Mr. J. A. Hobson"
- "The Douglas theory a reply to Mr. Hobson"@en
- "Douglas theory, a reply to mr. j.a. hobson"
- "The Douglas theory a reply to Mr. J.A. Hobson"@en