Petroleum and coal = Ropa a uhlie /
Výskumný ústav pre ropu a uhlo̕vodíkové plyny v Bratislave.
Slovenská spoločnost ̕priemyselnej chémie.
Bratislava : Slovnaft Inc.,
1995-
Title from cover.
Vol. 37 accompanied by 3 supplements in Slovak called: Slovnaft dnes.
Chemical abstracts
Petroleum
Coal
Lubrication and lubricants
Petroleum and Coal