00476naa#a2200169#i#4500001002100000005001700021011001400038100004100052101000800093102000700101200007500108210005100183215001000234608002700244700002000271856001500291EN\INFRA-M\bibl\290620240521014422.2##a1998-0728##a20140617b2014####ek#y0engy0150####ca0#aRUS##aRU1#aHow to Deal with Primary Sources at Elementary SchooleJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2014##a3 с.##aJournal article2local#1aSolovevgYakov 4#anaukaru.ru