00542naa#a2200181#i#4500001002100000005001700021011001400038100004100052101000800093102000700101200010500108210005100213215001000264608002700274700002300301700002200324856001400346EN\INFRA-M\bibl\215220260121073144.3##a2075-4094##a20141105b2014####ek#y0engy0150####ca0#aRUS##aRU1#aA survey of pre-school children who are often ill and the ways of their improvementeJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2014##a4 с.##aJournal article2local#1aVorontsovagZoya  #1aKosobutskayagS. 4#azh-szf.ru