00538naa#a2200169#i#4500001002000000005001700020011001400037100004100051101000800092102000700100200014200107210005100249215001000300608002700310700001700337856001400354EN\INFRA-M\bibl\96320240707033624.7##a1998-1740##a20131216b2013####ek#y0engy0150####ca0#aRUS##aRU1#aDEFINITION OF LEVEL OF ABSTRACTNESS, COMPLEXITY AND INFORMATIONAL CONTENT OF VARIOUS SUBJECTS SCHOOL TEXTBOOK OF PHYSICSeJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2013##a8 с.##aJournal article2local#1aMayergR. V.4#azh-szf.ru