00646naa#a2200181#i#450# EN\\bibl\112753 20260119070248.1 2311-1402 20170925b2017####ek#y0engy0150####ca RUS RU BLOCK SYSTEM OF CREATING EDUCATIONAL AND TRAINING CLASSES IN TRACK AND FIELD ATHLETICS FOR LEVEL INCREASE OF PHYSICAL FITNESS TO PASS «READY FOR LABOR AND DEFENSE» COMPLEX Journal article Nizhnevartovsk Nizhnevartovsk State University 2017 6 с. Journal article local . 378:796.015.1:796.42 RUS Kovalchuk O G vestnik.nvsu.ru