TY - JOUR AU - R. Z. Gushel' TI - On 150-th anniversary of the ''Pedagogical collected articles'' JO - Matematičeskoe obrazovanie PY - 2014 SP - 58 EP - 63 VL - 69 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MO_2014_69_1_a5/ LA - ru ID - MO_2014_69_1_a5 ER -