Juhlajulkaisu Professori Oiva Ketosen 60-vuotispäiväksi 21.1.1973. Essays Dedicated to Professor Oiva Ketonen on the Occasion of His Sixtieth Birthday 21 January 1973 |
Juhlajulkaisu Professori Oiva Ketosen 60-vuotispäiväksi 21.1.1973. Essays Dedicated to Professor Oiva Ketonen on the Occasion of His Sixtieth Birthday 21 January 1973 |