00538naa#a2200169#i#450# EN\INFRA-M\bibl\963 20240707040638.7 1998-1740 20131216b2013####ek#y0engy0150####ca RUS RU DEFINITION OF LEVEL OF ABSTRACTNESS, COMPLEXITY AND INFORMATIONAL CONTENT OF VARIOUS SUBJECTS SCHOOL TEXTBOOK OF PHYSICS Journal article Moscow INFRA-M Academic Publishing LLC. 2013 8 с. Journal article local Mayer R. V. zh-szf.ru