|"JAN KOLAR" GRAMMAR SCHOOL, BACKI PETROVAC|
Professor Jaroslav Grnja
Professor Jaroslav Grnja was born 1967 in Novi Sad, attended primary school "Jan Cajak" in Backi Petrovac and grammar school "Jovan Jovanovic Zmaj" in Novi Sad. Graduated in Faculty of Sciences in Novi Sad, graduation work: "Prozracnost zemljine atmosfere na talasnim duzinama 464 nm i 528 nm". He works at school since 1993 and teaches subject Physics.
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