Sám po Amazonke. Nástup. I.diel.

Opere.

Operator i mašina /

Radiokrystalografie I. diel.

Búrka. I. diel.

Slovenská gramatika. I. diel a II. diel.

Skandál v opeře /

Operations management. : Decision making in the operations function. /

Slovar’ oper.

Steam-plant operation /

Operative Gynäkologie /

Operational Amplifiers /

Operational amplifiers /

Operative Urologie 1

Operative urology 2.

Operative neurosurgery. Volume 1, Cranial, cerebral and intracranial vascular disease /

Linear operators. Part 3, Spectral operators /

Linear operators. Part 2, Spectral theory /

Linear operators. Part 1, General theory /

Operational Calculus /

Sprievodca v opere. I.diel.