Ropa : problém súčasného sveta
By: L̕udovít Brezula ; [ob. a väzbu navrhol Ján Meisner a Jozef Michaláč].
Edition: 1. vyd.
Series: Malá moderná encyklopédia
Publisher: Obzor : Socialistická akadémia SSR
Published: 1977
Place of publication: Bratislava
Language: slo
Number of pages: 175
Subjects: Petroleum.
Notes: Bibliography: p. [179]