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 0 20th-century Armenian mathematicians  1970-01-01

 0 20th-century Azerbaijani mathematicians  1970-01-01

 0 20th-century Belarusian mathematicians  1970-01-01

 0 20th-century Bosnia and Herzegovina mathematicians  1970-01-01

 0 20th-century Bulgarian mathematicians  1970-01-01

 0 20th-century Chinese physicists  1970-01-01

 0 20th-century Croatian mathematicians  1970-01-01

 0 20th-century Cuban mathematicians  1970-01-01

 0 20th-century Czech mathematicians  1970-01-01

 0 20th-century Egyptian mathematicians  1970-01-01

 0 20th-century Filipino mathematicians  1970-01-01

 0 20th-century Finnish mathematicians  1970-01-01

 0 20th century in robotics  1970-01-01

 0 20th-century Israeli mathematicians  1970-01-01

 0 20th-century Latvian mathematicians  1970-01-01

 0 20th-century Lithuanian mathematicians  1970-01-01

 0 20th-century mathematicians from Georgia (country)  1970-01-01

 0 20th-century Moldovan mathematicians  1970-01-01

 0 20th-century New Zealand mathematicians  1970-01-01

 0 20th-century Nigerian mathematicians  1970-01-01