Ostroh, [134], [320].

Ostroh, Academy of Sciences of, [320].

Ostrohosk, [122], [137], [332].

Ottinia, [315].

Overland communication, [300] f.

Ovruch, [48], [134], [145].

Oyster, [249].

Ozokerite, [279] f., [313].

[[Contents]]

P.