00590naa#a2200181#i#4500001002100000003001700021005001700038011001400055100004100069101000800110102000700118200013700125210005100262215001000313608002700323700002000350856003800370EN\INFRA-M\bibl\2053/en/manage/index20250420001734.7##a1998-0728##a20140417b2014####ek#y0engy0150####ca0#aRUS##aRU1#aContinuity Between the Primary and the Secondary Schools as One of the Principles for Biology Education DevelopmenteJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2014##a6 с.##aJournal article2local#1aKalinovagG. S.4#afht.editorum.ruu/en/manage/index