00745naa#a2200181#i#450# EN\\bibl\123519 20260709185843.4 1994-4683 20230831b2023####ek#y0engy0150####ca RU EXPERIMENTAL EVALUATION OF PHYSICAL EXERCISE OPERATIONAL IMPACT ON THE ATTENTION INDICATORS OF PRE-SCHOOL CHILDREN WITH MENTAL RETARDATION AND SPEECH IMPAIRMENT Journal article Moscow National State University of Physical Education, Sports and Health named after P.F. Lesgaft 2023 3 с. Journal article local умственно отсталых, слаборазвитых. 376.42 Semenov L A Gukova T V uchzapiski.lesgaft.spb.ru