TY  - GEN
TY  - GEN
T1  - Practical work in elementary astronomy
A1  - Minnaert, M. G. J.
LA  - eng
PP  - Dordrecht
PB  - D. Reidel
YR  - 1969
UL  - https://kansalliskirjasto.finna.fi/Record/vaari.1609994
ER  -