Subjects
- Labor movement -- Russia (Federation)1
- Lectures1
- Manuscripts (documents)1
- Marijuana1
- Memoirs1
- Memorandums1
- Mensheviks1
- Mensheviks -- Georgia (Republic)1
- Mensheviks -- Periodicals1
- Merchant marine -- United States1
- Naval history1
- Opera1
- Opera producers and directors1
- Opera producers' and directors' spouses1
- Philosophers1
- Philosophy -- Research1
- Philosophy -- Study and teaching1
- Philosophy, Marxist1
- Philosophy, Modern -- 20th century1
- Photocopies1