Nuorison parhaaksi : professori Arvo Lehtovaaran 75-vuotisjuhlakirja = For the benefit of youth : publication dedicated to professor Arvo Lehtovaara on his 75th birthday
Nuorison parhaaksi : professori Arvo Lehtovaaran 75-vuotisjuhlakirja = For the benefit of youth : publication dedicated to professor Arvo Lehtovaara on his 75th birthday
Nuorison parhaaksi : professori Arvo Lehtovaaran 75-vuotisjuhlakirja = For the benefit of youth : publication dedicated to professor Arvo Lehtovaara on his 75th birthday
Nuorison parhaaksi : professori Arvo Lehtovaaran 75-vuotisjuhlakirja = For the benefit of youth : publication dedicated to professor Arvo Lehtovaara on his 75th birthday