TY - JOUR AU - G. Teleki TI - Astronomical Refraction Investigations Today JO - Publications of the Department of Astronomy PY - 1973 SP - 5 VL - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/PDA_1973_4_a0/ LA - en ID - PDA_1973_4_a0 ER -