00537naa#a2200169#i#4500001002100000005001700021011001400038100004100052101000800093102000700101200013700108210005100245215001000296608002700306700002000333856001400353EN\INFRA-M\bibl\205320250108070828.3##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#azh-szf.ru