TY  - GEN
TY  - GEN
T1  - Magnification of WWSS long-period seismographs
T2  - Institute of Seismology. University of Helsinki
A1  - Tobyáš, Vladimír
A2  - Teikari, Pekka, 1931-
A2  - Vesanen, Eijo, 1912-
LA  - eng
PP  - Hki
PB  - Univerity of Helsinki
YR  - 1977
UL  - https://kansalliskirjasto.finna.fi/Record/fikka.3274588
ER  -