TY - JOUR AU - R. Grujić TI - Differences in the Latitude Values Obtained by Different Observers at the Astronomical Observatory in Belgrade JO - Publications of the Department of Astronomy PY - 1976 SP - 135 EP - 136 VL - 6 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/PDA_1976_6_1_a23/ ID - PDA_1976_6_1_a23 ER -