?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=+Grasselly+Gyula&rft.aufirst=Gyula&rft.aulast=Grasselly&rft.atitle=50+years+of+the+Institute+of+Mineralogy%2C+Geochemistry+and+Petrography+of+the+Attila+J%C3%B3zsef+University+at+Szeged&rft.date=1971&rft.issn=0365-8066&rft.title=Acta+mineralogica-petrographica&rft.pages=3-12&rft.issue=1&rft.volume=20&rft.genre=article