TY - GEN TY - GEN T1 - 100 years of Mach's principle T2 - Report / Observatory and Astrophysics Laboratory. University of Helsinki A2 - Isaksson, Eva, 1953- LA - eng PP - Hki PB - University of Helsinki YR - 1984 UL - https://kansalliskirjasto.finna.fi/Record/fikka.3322878 SN - 951-45-3493-X nidottu ER -