00514naa#a2200169#i#4500001001600000005001700016011001400033100004100047101000800088102000700096200009100103210005800194215001000252608002700262700003500289856002000324EN\\bibl\11310020260119035511.1##a2311-1402##a20110925b2011####ek#y0engy0150####ca0#aRUS##aRU1#aDifferentiated approach to the geografic information systems teachingeJournal article1#aNizhnevartovskcNizhnevartovsk State Universityd2011##a5 с.##aJournal article2local#1aSlivagEkaterina Alexandrovna 4#avestnik.nvsu.ru