LDR 00490naa#a2200169#i#450# 001 EN\\bibl\56986 005 20241125121137.1 011 ## _a2542-1840 100 ## _a20230131b2023####ek#y0engy0150####ca 102 ## _aRU 200 1# _aAttention Span in Preteen Boys and Girl _eJournal article 210 1# _aKemerovo _cKemerovo State University _d2023 215 ## _a5 с. 608 ## _aJournal article _2local 700 #1 _aTsigichko _gElena Aleksandrovna 700 #1 _aKrivoruchko _gMayya Olegovna 856 4# _ajsocnet.ru _u